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