InChI=1S/C19H18N4O3/c1-9-8-22-19(25)16-15(14(18(21)24)10(2)23-17(9)16)12-5-4-11(7-20)6-13(12)26-3/h4-6,8,15,23H,1-3H3,(H2,21,24)(H,22,25)/t15-/m1/s1