InChI=1S/C21H32O9/c1-10-6-5-7-11(2)13(22)9-12(14(23)8-10)21(3,4)30-20-17(26)15(24)16(25)18(29-20)19(27)28/h6,11-12,15-18,20,24-26H,5,7-9H2,1-4H3,(H,27,28)/b10-6-