C/C=C/C=C\C=C/C(O)C(C)C(CCC(C)C1OC(=O)C=CC1C)OP(=O)([O-])O.[Na+]
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?