You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[[1-[2-[(2,4-dioxo-1,3-thiazolidin-5-ylidene)methyl]-6-methylphenyl]pyrrolidin-3-yl]methyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H27N3O4S
assistant