InChI=1S/C21H22O9/c1-9-18(25)19(26)20(27)21(28-9)30-16-7-12(23)6-15-17(16)13(24)8-14(29-15)10-2-4-11(22)5-3-10/h2-7,9,14,18-23,25-27H,8H2,1H3/t9-,14-,18-,19+,20+,21-/m0/s1