Cc1c(C(=O)C/C(=N/NC(=O)C[n+]2ccccc2)C(=O)Nc2ccccc2)[n+]([O-])c2ccccc2[n+]1[O-].[Cl-]
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?