Cl.Cn1cc(NC(=O)c2cc(NC(=O)CCCCCCCCCCC(=O)Nc3cc(C(=O)Nc4cc(C(=O)NCCC(=N)N)n(C)c4)n(C)c3)cn2C)cc1C(=O)NCCC(=N)N
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?