InChI=1S/C23H24N2O4/c1-15-21(26)24-14-18-10-6-5-9-17(18)13-20(24)22(27)25(15)19(23(28)29)12-11-16-7-3-2-4-8-16/h2-10,15,19-20H,11-14H2,1H3,(H,28,29)/t15?,19-,20?/m0/s1