COC(=O)CCCC1=CC2=C(c3ccccc3)C(=O)C(C)(OC(=O)C3CCCC3)C(=O)C2=CN1Cc1ccc2c(c1)OCO2
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?