You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance ethyl 5-acetyl-2-[2-(4-bromo-3-methylpyrazol-1-yl)propanoylamino]-4-methylthiophene-3-carboxylate .
user
C17H20BrN3O4S
assistant