CC1(OC(=O)C2CCCC2)C(=O)C=C2C=C(c3ccsc3)N(CCc3c[nH]c4ccccc34)C=C2C1=O
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?