CC(C)CCOc1ccc(-c2c(=O)n(OCc3ccc([N+](=O)[O-])cc3)c3ccccc3[n+]2[O-])cc1
Molecules with a polar surface area of greater than 140 angstroms squared (Å2) tend to be poor at permeating cell membranes. What's the psa of this molecule?