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 3-methyl-N-[(E)-1-(4-morpholin-4-ylsulfonylphenyl)ethylideneamino]-4-oxophthalazine-1-carboxamide is given. What is its corresponding molecular formula?
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C22H23N5O5S
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