You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-(2,4-dimethylphenyl)imino-5-[(4-ethoxy-3-methoxyphenyl)methylidene]-1,3-thiazolidin-4-one .
user
C21H22N2O3S
assistant