CC1(C)C(=O)/C=C\C(=O)C(C)(C)C(=O)/C=C\C(=O)C(C)(C)C(=O)/C=C\C(=O)C(C)(C)C(=O)/C=C\C1=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?