COc1ccc2[nH]c3c(c2c1)CCN1C(=O)C(CC(=O)NCCCN(C)C)C[C@H](C(=O)N2CCOCC2)[C@@]31CCC1CCCC1
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?