Cc1cc(CNC(=O)[C@H]2C[C@@H]2[C@H](NP(=O)(c2ccccc2)c2ccccc2)c2ccccc2)nn1C
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?