InChI=1/C21H26N4O3/c26-19-13-22-17-8-2-3-9-18(17)25(19)15-20(27)24-12-6-7-16(14-24)21(28)23-10-4-1-5-11-23/h2-3,8-9,13,16H,1,4-7,10-12,14-15H2/t16-/m1/s1 9ABB3BF55AA88B55