COc1ccc(C(c2nnnn2-c2ccc3c(c2)OCCO3)N2CCC3(CC2)C(=O)NCN3c2ccccc2)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?