CN(C)c1ccc2c(SCC(=O)OCC(=O)[C@@]3(O)CC[C@H]4[C@@H]5CCC6=CC(=O)C=C[C@]6(C)[C@H]5C(=O)C[C@@]43C)c3ccc(N(C)C)cc3nc2c1
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?