molecule cf4_dimer {
   C 0.00000000 0.00000000 0.00000000
   F 0.00000000 1.31819810 0.00000000
   F -0.62140450 -0.43939940 1.07630420
   F -0.62140450 -0.43939940 -1.07630420
   F 1.24280900 -0.43939940 0.00000000
   --
   C 0.00000000 4.01000000 -0.00000000
   F 0.00000000 2.69180190 -0.00000000
   F -0.62140450 4.44939940 -1.07630420
   F -0.62140450 4.44939940 1.07630420
   F 1.24280900 4.44939940 0.00000000
}

set basis aug-cc-pVDZ

energy('sapt2+')