C=CC1=C(C)c2cc3[nH]c(c4c5nc(cc6[nH]c(cc1n2)c(C=O)c6CC)C(C)=C5C(=O)[C@@H]4C(=O)OC)[C@@H](CCC(=O)O)[C@@H]3C
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?