COc1ccc(CCn2c(=N)c(C(=O)NCCN3CCOCC3)cc3c(=O)n4cccc(C)c4nc32)cc1OC
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?