InChI=1S/C21H22O10/c22-11-2-4-13(14(23)6-11)10-5-9-1-3-12(7-15(9)29-8-10)30-21-18(26)16(24)17(25)19(31-21)20(27)28/h1-4,6-7,10,16-19,21-26H,5,8H2,(H,27,28)