You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-(3,4-dimethylphenyl)-2-[(5Z)-4-oxo-2-sulfanylidene-5-(thiophen-2-ylmethylidene)-1,3-thiazolidin-3-yl]acetamide .
user
C18H16N2O2S3
assistant