CC(C)N(C(=O)[C@H]1C[C@H](CC(=O)NCCC2=CCCCC2)C(=O)N2CCc3c([nH]c4cc(CCC(=O)N(C)C)ccc34)[C@]12C)C(C)C
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?