CC1c2cc(c(n2CCN1Cc3cnc(nc3N)N)c4ccccc4)Cc5ccccc5 120368 CHEMBL77758 IC50 = 42 nM 18011 8 Q8NWQ9 Dihydrofolate reductase CSc1c2ccc(cc2n3c1CN(CC3)Cc4cnc(nc4N)N)Cl 120367 CHEMBL74592 IC50 = 73 nM 18011 8 Q8NWQ9 Dihydrofolate reductase