InChI=1/C20H22O10/c21-10-4-1-9(2-5-10)3-6-12(23)15-13(24)7-11(22)8-14(15)29-20-18(27)16(25)17(26)19(28)30-20/h1-2,4-5,7-8,16-22,24-28H,3,6H2