InChI=1S/C18H19N5O2/c1-10-12(9-21-17-15(10)16(19)22-18(20)23-17)5-4-11-8-13(24-2)6-7-14(11)25-3/h4-9H,1-3H3,(H4,19,20,21,22,23)/b5-4-