COc1cc2ccc1-c1cc(ccc1O)CC1c3cc4c(cc3CCN1C)Oc1c(OC)cc3c(c1O4)C(C2)N(C)CC3
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?