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 N-(3,5-dimethylphenyl)-2-[(5E)-5-[(6-methylpyridin-2-yl)methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl]acetamide ?
user
C20H19N3O3S
assistant