CC(=O)O[C@H]1CC2C(C3CC[C@H](C(C)CCC(N)=O)[C@]31C)[C@H](OC(C)=O)C[C@@H]1CC3(CC[C@]21C)OOC1(CCC(C)CC1)OO3
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?