InChI=1/C20H21N3O3/c1-22(2)13-8-6-12(7-9-13)19-16-5-3-4-15(16)17-10-14(23(25)26)11-18(24)20(17)21-19/h3-4,6-11,15-16,19,21,24H,5H2,1-2H3/t15-,16-,19-/m1/s1 A12A82F018AB85CF