InChI=1/C26H26N2O3/c1-28(17-19-12-9-15-23(30-2)26(19)31-3)24(18-10-5-4-6-11-18)25(29)21-16-27-22-14-8-7-13-20(21)22/h4-16,24,27H,17H2,1-3H3/t24-/m1/s1 3A741DF35BFB689D