Fc1nc(N2CCCC2)c(F)c(Oc2ccccc2Oc2c(F)c(F)nc(N3CCCC3)c2F)c1F
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?