InChI=1S/C21H22O11/c22-11-6-10(30-20-16(25)14(23)15(24)17(31-20)19(27)28)7-12-13(11)18(26)21(29,32-12)8-9-4-2-1-3-5-9/h1-7,14-18,20,22-26,29H,8H2,(H,27,28)