InChI=1S/C18H17N5O/c1-10-2-4-11(5-3-10)6-7-12-15-13(17(24)23-18(19)22-15)8-14-16(12)21-9-20-14/h2-5,8-9H,6-7H2,1H3,(H,20,21)(H3,19,22,23,24)