C=CCN1c2ccccc2[C@]23C[C@@H](C(=O)OC)N(C(=O)NCCC)C2=NC(C(=O)OC)=C(C(=O)OC)[C@H]13
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?