InChI=1S/C22H20O14/c23-10-3-1-8(5-13(10)35-22-17(27)15(25)16(26)18(36-22)21(32)33)6-14(20(30)31)34-12-4-2-9(19(28)29)7-11(12)24/h1-7,15-18,22-27H,(H,28,29)(H,30,31)(H,32,33)/b14-6-