InChI=1/C18H23N5O3/c1-13(20-22-10-8-21(2)9-11-22)15-16(24)19-18(26)23(17(15)25)12-14-6-4-3-5-7-14/h3-7,20H,8-12H2,1-2H3,(H,19,24,26)/b15-13-/f/h21H 512297B670B963DD