7-[2-(Biphenyl-4-yl)-2-oxoethoxy]-2,3-dihydrocyclopenta[c]chromen-4(1H)-one;Benzo[b]cyclopenta[d]pyran-4(1H)-one, 7-(2-[1,1'-biphenyl]-4-yl-2-oxoethoxy)-2,3-dihydro-
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