InChI=1S/C18H21N5O3/c1-11-6-15-16(20-7-11)13(17(25)19-4-5-24)8-23(15)9-14-12(2)18(26-3)22-10-21-14/h6-8,10,24H,4-5,9H2,1-3H3,(H,19,25)