InChI=1S/C21H28O9/c1-8-7-28-12-6-10-4-5-11(9(2)21(10,3)18(25)13(8)12)29-20-16(24)14(22)15(23)17(30-20)19(26)27/h7,10-11,14-18,20,22-25H,2,4-6H2,1,3H3,(H,26,27)