You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[(5E)-5-(1,3-benzodioxol-5-ylmethylidene)-2,4-dioxo-1,3-thiazolidin-3-yl]ethyl]-2-thiophen-2-yl-1,3-thiazole-5-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C21H15N3O5S3
assistant