InChI=1S/C21H32O8/c1-10(8-28-19-16(25)14(23)15(24)17(29-19)18(26)27)4-3-5-20(2)11-6-12-13(7-11)21(12,20)9-22/h4,11-17,19,22-25H,3,5-9H2,1-2H3,(H,26,27)/b10-4-