COc1cc(/C=C2\N=C(c3ccccc3)N(c3ccc(C(=O)c4ccccc4)cc3N3C(=O)/C(=C/c4cc(OC)c(OC)c(OC)c4)N=C3c3ccccc3)C2=O)cc(OC)c1OC
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?