CC[C@H](NC(=O)[C@H](C)NC)C(=O)N1CCC[C@H]1c1nc(-c2ccccc2)c(-c2ccccc2)o1.O=CO
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?