CCOC(=O)c1[nH]c(C)c(C(=O)C2=C(O)C(=O)N(CCCn3ccnc3)C2c2ccncc2)c1C
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?