InChI=1S/C18H21N5O2/c1-23(10-11-8-13(24-2)5-7-16(11)25-3)12-4-6-15-14(9-12)17(19)22-18(20)21-15/h4-9H,10H2,1-3H3,(H4,19,20,21,22)