InChI=1S/C21H20O10/c22-10-4-5-12-13(8-10)30-14(15(12)23)7-9-2-1-3-11(6-9)29-21-18(26)16(24)17(25)19(31-21)20(27)28/h1-6,8,14,16-19,21-22,24-26H,7H2,(H,27,28)