COC(=O)C1=C(C(=O)OC)[C@@H]2N(C)c3ccc(OC)cc3[C@@]23C[C@@H](C(=O)OC)N(S(=O)(=O)c2ccc(OC)cc2)C3=N1
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?