You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 4-[(dihydroxyamino)oxymethyl]-N-ethyl-N-(6-methyl-7,7-dioxo-2-sulfamoyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-4-yl)benzamide into molecular formula.
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C18H23N3O8S3
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