Cc1ccc(C)c(NC(=O)CCNC(=O)N2C[C@@H]3C[C@H](C2)Cn2c3cccc2=O)c1
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?