COc1ccc(CN(C(=O)CN2C(=O)c3ccccc3S2(=O)=O)C(C(=O)NCC2CCCO2)c2ccncc2)cc1
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?