COc1ccc(C(=O)CC2=Nc3nnc(CCCCCCCc4nnc5n4C(=O)C(CC(=O)c4ccc(OC)cc4)=N5)n3C2=O)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?