C[C@]12CC[C@H]3[C@@H](CCC4=C[C@@H](O)CC[C@@]43C)[C@@H]1CC(=C\c1ccncc1)/C2=N\O
Molecules with a polar surface area of greater than 140 angstroms squared (Å2) tend to be poor at permeating cell membranes. What's the psa of this molecule?