InChI=1S/C21H28O16/c1-33-8-4-6(9(5-22)35-21-15(28)11(24)13(26)17(37-21)19(31)32)2-3-7(8)34-20-14(27)10(23)12(25)16(36-20)18(29)30/h2-4,9-17,20-28H,5H2,1H3,(H,29,30)(H,31,32)