NC(=O)C1(NC(=O)[C@@H]2CC3(CC(c4cccc(NC(=O)[C@@H]5CCC(=O)N5)c4)=NO3)CN2C(=O)c2ccccc2)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?