CCOC(=O)N1CCN(C(=O)COc2ccc3c(c2)C(=O)CC2(CCN(C(C)=O)CC2)O3)CC1
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?