Cc1cc2c(cc1C)NC1(C[C@@H]3CCN4C(=O)CC[C@H](C1)[C@H]34)C(NC(C)(C)CC(C)(C)C)=N2
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?