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What is the molecular formula of the molecule ethyl (1R,2R,5S,6S,7R)-8-bromo-2-[(2-chlorophenyl)carbamoyl]-3-(5-hydroxypentyl)-4-oxo-10-oxa-3-azatricyclo[5.2.1.01,5]decane-6-carboxylate ?
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C23H28BrClN2O6
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