COc1ccc2c(c1)c(=O)oc1c(C)c(OC(C)C(=O)NCC3CCC(C(=O)O)CC3)ccc12
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?