C=CCN1C(=O)C2(C(C(=O)c3ccc(C)o3)=C(O)C(=O)N2CCCN2CCOCC2)c2ccccc21
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?