InChI=1S/C25H31NO4/c1-23(2)19-7-10-25(4)20(24(19,3)9-8-21(23)27)12-16-18(30-25)13-17(29-22(16)28)15-6-5-11-26-14-15/h5-6,11,13-14,19-21,27H,7-10,12H2,1-4H3/t19-,20+,21-,24-,25+/m0/s1