CCCCOC(=O)NC(=O)c1cn(CCCOC(=O)CCCCCCCCC(=O)OCCCn2cc(C(=O)NC(=O)OCCCC)c(=O)n(C)c2=O)c(=O)n(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?