InChI=1S/C21H20O14/c22-8-2-1-6(13(26)15(8)28)3-11(25)14(27)12-9(23)4-7(5-10(12)24)34-21-18(31)16(29)17(30)19(35-21)20(32)33/h1-2,4-5,16-19,21-24,26,28-31H,3H2,(H,32,33)