InChI=1S/C23H32O8/c1-3-5-6-7-8-9-10-14-17(15-12-11-13-16(24)4-2)30-23-20(27)18(25)19(26)21(31-23)22(28)29/h4,10,14,16-21,23-27H,2-3,5-9H2,1H3,(H,28,29)/b14-10+