You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule methyl 3-(4-amino-4-iminobutyl)-5-(1H-benzimidazol-2-ylsulfonyl)-2-oxo-3a,4,6,6a-tetrahydro-3H-pyrrolo[3,4-b]pyrrole-1-carboxylate into molecular formula.
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C19H24N6O5S
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