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What is the molecular formula of the molecule identified by 4-[[(1S,2S)-1-hydroxy-2-(1H-inden-2-yl)-1,3-dihydroinden-2-yl]methyl]benzoic acid;4-[[(1R,2R)-1-hydroxy-2-(1H-inden-2-yl)-1,3-dihydroinden-2-yl]methyl]benzoic acid ?
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