InChI=1S/C23H30O8/c1-14(21(25)16-12-19(28-4)22(30-6)20(13-16)29-5)31-23-17(26-2)10-15(8-7-9-24)11-18(23)27-3/h7-8,10-14,21,24-25H,9H2,1-6H3/b8-7-