InChI=1S/C18H22O12/c1-18(2,27)8-4-5-9(19)7(3-6(15(23)24)13(5)29-8)28-17-12(22)10(20)11(21)14(30-17)16(25)26/h3,8,10-12,14,17,19-22,27H,4H2,1-2H3,(H,23,24)(H,25,26)