COCCN1C=C2C(=O)C(C)(OC(=O)C3CCCC3)C(=O)C(c3ccccc3)=C2C=C1CCCC(=O)OC
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?