CCOC(=O)NC(=O)c1cn(CCN(CCO)C(=O)NCCCCCCNC(=O)N(CCO)CCn2cc(C(=O)NC(=O)OCC)c(=O)[nH]c2=O)c(=O)[nH]c1=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?