You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[3-(carboxymethylcarbamoyl)-5-[(1-carboxy-2-sulfanylethyl)carbamoyl]benzoyl]amino]-4-sulfanylpentanoic acid into its molecular formula.
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C19H23N3O9S2
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