InChI=1S/C21H34O9/c1-10(2)14(23)13(22)9-11(3)12-5-7-21(4,8-6-12)30-20-17(26)15(24)16(25)18(29-20)19(27)28/h5,7,10-12,14-18,20,23-26H,6,8-9H2,1-4H3,(H,27,28)