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system
Name the molecular formula for the molecule established as tert-butyl N-[(3R)-3-[(1S)-1-(3-bromophenyl)-2-oxo-2-pyrazol-1-ylethyl]-1-methyl-2-oxoindol-3-yl]carbamate using the IUPAC nomenclature.
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C25H25BrN4O4
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