InChI=1S/C21H18O15/c22-5-2-1-4(9(23)10(5)24)18-15(29)13(27)8-6(34-18)3-7(11(25)12(8)26)35-21-17(31)14(28)16(30)19(36-21)20(32)33/h1-3,14,16-17,19,21-26,28-31H,(H,32,33)