InChI=1S/C21H20O11/c22-7-1-2-8-10-6-29-18-9(17(10)30-12(8)5-7)3-4-11(13(18)23)31-21-16(26)14(24)15(25)19(32-21)20(27)28/h1-5,10,14-17,19,21-26H,6H2,(H,27,28)