You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [2-[(3,4-dimethylphenyl)carbamoylamino]-2-oxoethyl] 5-(furan-2-carbonylamino)thiophene-2-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C21H19N3O6S
assistant