InChI=1/C20H26N4O3/c1-13(2)18-20(26)21-7-8-24(18)11-14-5-4-6-15(9-14)19-22-16(12-27-3)10-17(25)23-19/h4-6,9-10,13,18H,7-8,11-12H2,1-3H3,(H,21,26)(H,22,23,25)/t18-/m1/s1/f/h21,24H 97A11A347FB52B15