COC(=O)C1=C(C)N(Cc2ccccc2)C2=C3C(=O)CCCC3[C@@](O)(C(=O)OC)C(=O)N2C1c1ccccc1
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?