InChI=1S/C24H24O4/c1-16-10-21(28-15-24(26)27)11-17(2)22(16)14-19-8-9-23(25)20(13-19)12-18-6-4-3-5-7-18/h3-11,13,25H,12,14-15H2,1-2H3,(H,26,27)