InChI=1S/C21H34O9/c1-11(10-22)8-14(23)9-12(2)13-4-6-21(3,7-5-13)30-20-17(26)15(24)16(25)18(29-20)19(27)28/h4,6,11-13,15-18,20,22,24-26H,5,7-10H2,1-3H3,(H,27,28)