CCCCCCCCCCCCCCCC(=O)Nc1ccn(C2CC(OP(=O)(O)OCC3OC(n4cc(F)c(=O)[nH]c4=O)CC3OC(C)=O)C(CO)O2)c(=O)n1
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?