InChI=1S/C21H18O14/c22-7-3-6(33-21-17(30)14(27)16(29)19(35-21)20(31)32)4-10-11(7)13(26)15(28)18(34-10)5-1-8(23)12(25)9(24)2-5/h1-4,14,16-17,19,21-25,27-30H,(H,31,32)/t14-,16-,17+,19-,21+/m0/s1