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(2007/10/03)3-(3-methoxyphenyl)-4-methyl-9,10-dihydrocyclopenta[c]furo[2,3-f]chromen-7(8H)-one
3,4-dimethyl-9,10-dihydrocyclopenta[c]furo[2,3-f]chromen-7(8H)-one
[(7-methyl-4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-9-yl)oxy]acetic acid
7-methyl-9-(2-oxocyclohexyloxy)-2,3-dihydrocyclopenta[c]chromen-4(1H)-one
9-[2-(4-methoxyphenyl)-2-oxoethoxy]-7-methyl-2,3-dihydrocyclopenta[c]chromen-4(1H)-one