CCC1=C2CC[C@H]3C(=O)N(c4ccccc4)C(=O)[C@H]3[C@H]2[C@@]2(C)/C(=N/CC3CC3)OC(=O)N2C1=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?