InChI=1/C18H20N4O/c19-17-15(11-21-18(20)22-17)9-14-7-4-8-16(10-14)23-12-13-5-2-1-3-6-13/h1-8,10,15H,9,11-12H2,(H4,19,20,21,22)/p+1/t15-/m0/s1/fC18H21N4O/h22H,19-20H2/q+1 CDF5139F68FCB1EB