InChI=1S/C21H28O10/c1-4-5-12-6-7-13(14(9-12)28-3)30-15(22)8-11(2)10-29-21-18(25)16(23)17(24)19(31-21)20(26)27/h4,6-7,9,11,16-19,21,23-25H,1,5,8,10H2,2-3H3,(H,26,27)