Cc1ccc([C@@]2(C)CC/C(=N/N=C3\CC[C@](C)(c4ccc(C)c(C)c4)c4cc(C)c(C)cc43)c3cc(C)c(C)cc32)cc1C
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?