CC(C)[C@H]1CN=C2N1C[C@@H](Cc1ccc(O)cc1)N2C[C@H](C)NC(=O)CCC1CCCCC1
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?