Oc1c(NCn2nc(CCCCCCCCc3nn(CNc4ccc5ccccc5c4O)c(=S)o3)oc2=S)ccc2ccccc12
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?