Cn1ccc(C(=O)NCCN(CCNC(=O)c2ccn(C)c(=O)c2O)CCNC(=O)c2cccc(=O)n2O)c(O)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?