You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(5Z)-2,4-dioxo-5-(thiophen-2-ylmethylidene)-1,3-thiazolidin-3-yl]-N-[2-(4-methylphenyl)sulfanylethyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H18N2O3S3
assistant