O=C(/C=C/c1cccc(Br)c1)N1CCN(CCOC(c2ccccc2)c2ccccc2)CC1.O=C(O)/C=C\C(=O)O
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?