CC(C)=CCC/C(C)=C/CO/N=C1\[C@@H]2CCn3c(=O)n(Cc4cc5c(cc4Cl)OCO5)c(=O)n3[C@H]2[C@H](O)[C@H]2O[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?