You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[2-[(2R)-2-(1-amino-2-methylpentyl)-5-oxopyrrolidin-1-yl]ethylsulfanyl]-1,3-thiazole-4-carboxylic acid into its molecular formula.
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C16H25N3O3S2
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