memory 30 gb

molecule {
0 1
   N        3.17737       -0.47324       -1.32021
   N        2.00376       -2.54915       -1.31281
   N        1.36114       -0.81656        0.16590
   N        2.32536        1.29352       -0.01307
   N        1.19783        2.80352        1.39571
   N        0.00363        1.49582       -0.18222
   N       -1.18407        2.80923        1.39589
   N       -0.00640       -2.70190       -0.06169
   N       -1.36521       -0.81010        0.16593
   N       -2.01457       -2.53865       -1.31459
   N       -3.17830       -0.45723       -1.32177
   N       -2.31898        1.30478       -0.01298
   N       -4.62599        1.41194        0.39174
   N       -3.44731        3.31605       -0.41300
   N       -5.79039        3.45016       -0.00990
   C        3.00804       -1.74859       -1.68079
   C        2.30251       -0.05952       -0.40190
   C        1.20005       -2.00701       -0.39532
   C        1.12229        1.90076        0.41424
   C        0.00799        3.25811        1.79467
   C       -1.11301        1.90619        0.41434
   C       -1.20922       -2.00094       -0.39597
   C       -2.30236       -0.04825       -0.40239
   C       -3.01474       -1.73315       -1.68299
   C       -3.52277        2.04520       -0.01132
   C       -5.72589        2.16526        0.35411
   C       -4.61150        3.96534       -0.37377
   C        3.53257        2.02842       -0.01158
   N        4.63276        1.39049        0.39236
   N        3.46298        3.29930       -0.41421
   C        5.73608        2.13878        0.35452
   C        4.63008        3.94335       -0.37509
   N        5.80651        3.42309       -0.01045
   C       -0.00999       -4.02396        0.36202
   N        1.18028       -4.59687        0.59002
   N       -1.20344       -4.59062        0.58906
   C        1.10233       -5.85110        1.02811
   C       -1.13245       -5.84527        1.02716
   N       -0.01699       -6.54725        1.25784
   H       -4.59920        5.00939       -0.67991
   H       -6.65462        1.68931        0.66203
   H        4.62262        4.98722       -0.68200
   H        6.66254        1.65887        0.66312
   H        2.04676       -6.35591        1.22336
   H       -2.07968       -6.34510        1.22166
   H        0.00991        4.03550        2.55525
   H        3.72803       -2.15740       -2.38592
   H       -3.73600       -2.13812       -2.38903
   units angstrom 
}
set {
   basis 6-31+G*
   scf_type df
}  
optimize('b3lyp')