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(2007/10/02)2-(1-Hydroxy-4,4-dimethyl-2,6-dioxo-cyclohexyl)-indan-1,3-dione
2-(4,4-Dimethyl-2,6-dioxo-cyclohexylidene)-indan-1,3-dione
2-hydroxy-2-(2-hydroxy-4,4-dimethyl-6-oxo-1-cyclohexen-1-yl)-1H-indene-1,3(2H)-dione
2-hydroxy-2-(4,4-dimethyl-2,6-dioxocyclohexane-1-yl)-1H-indene-1,3(2H)-dione