COc1ccccc1CN(C)CCCN(C)CCCNCCC[n+]1c(-c2ccccc2)c2cc(N)ccc2c2ccc(N)cc21.[Cl-]
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?