COC(=O)C1Cc2c([nH]c3ccccc23)-c2[nH]c3ccccc3c2CC(NC(C)=O)C(=O)N2CCCC2C(=O)N1
Molecules with a polar surface area of greater than 60 angstroms squared (Å2) is hard to pass brain blood barrier. What's the psa of this molecule?