InChI=1S/C17H20O12/c18-8-9(19)11(13(22)23)28-15(10(8)20)29-17(16(26)27,12(21)14(24)25)6-7-4-2-1-3-5-7/h1-5,8-12,15,18-21H,6H2,(H,22,23)(H,24,25)(H,26,27)