CCC1=C(OC(=O)N(CC)CC)N2C(=O)O/C(=N\CCc3c[nH]c4ccccc34)[C@]2(Cc2ccccc2)[C@H]2C1=CC[C@H]1C(=O)N(CC(=O)OC)C(=O)[C@H]12
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?