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