You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2E)-N-[(2-chlorophenyl)methyl]-2-[(3-methoxyphenyl)methylidene]-3-oxo-4a,5,6,7,8,8a-hexahydro-4H-benzo[b][1,4]thiazine-6-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C24H25ClN2O3S
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