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What is the molecular formula of the molecule identified by (2S,5R,6R)-6-[[3-(2,6-dichlorophenyl)-5-methyl-2H-1,3-oxazole-4-carbonyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid ?
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C19H19Cl2N3O5S
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