C#CC1(O)CCC2[C@@H]3CCc4cc(Oc5nc(F)nc(-c6c(C)c(C(=O)OCC)n7ccccc67)n5)ccc4C3CC[C@@]21C
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?