InChI=1S/C17H22O12/c18-7(1-2-10(20)21)3-6-4-8(19)11(22)9(5-6)28-17-14(25)12(23)13(24)15(29-17)16(26)27/h4-5,7,12-15,17-19,22-25H,1-3H2,(H,20,21)(H,26,27)