You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[2-[(2,5-dimethoxyphenyl)methylidene]hydrazinyl]-4-methyl-1,3-thiazol-5-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H17N3O3S
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