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system
Provide the molecular formula for the IUPAC named substance 4-(4-chlorocyclohexa-1,3-dien-1-yl)-5-[(1S)-2-methoxy-1-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]-3,6-dimethylpyridine-2-carboxylic acid .
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C21H26ClNO5
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