You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (5S,6S,7R)-5-(3,4-dimethoxyphenyl)-7-(4-methylphenyl)-2-oxo-3,5,6,7-tetrahydrothiopyrano[2,3-d][1,3]thiazole-6-carboxylic acid ?
user
C22H21NO5S2
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