CCNC(=O)O/N=C1/C=C2CC[C@H]3C4CC[C@H](OC(=O)NCC)[C@@]4(C)CCC3[C@@]2(C)CC1
Molecules with a polar surface area of greater than 60 angstroms squared (Å2) is hard to pass brain blood barrier. What's the psa of this molecule?