You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (4R,5S)-4-[(1S)-3-methyl-1-[(4-methylphenyl)sulfonylamino]butyl]-5-nitrocyclohexene-1-carboxylic acid is given. What is its corresponding molecular formula?
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C19H26N2O6S
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