The process in which light initiates a chemical reaction or structural change in a molecule
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2-Butene-1,4-dione, 2-(5-methyl-3-phenyl-1H-pyrazol-1-yl)-1,4-diphenyl-, (Z)-
(2R,3R,5S)-3-Methyl-4,7-dioxo-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid benzhydryl ester
