InChI=1S/C21H32O9/c1-11(2)8-14(23)9-12(3)13-4-6-21(10-22,7-5-13)30-20-17(26)15(24)16(25)18(29-20)19(27)28/h4,6,8,12-13,15-18,20,22,24-26H,5,7,9-10H2,1-3H3,(H,27,28)