COc1ccc(CCNC(=O)c2ccc3c(c2)N(Cc2ccc(Cl)cc2)C(=O)c2ccccc2S3)cc1OC
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?