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 5-bromo-N-[1-[4-(2-hydroxybenzoyl)piperazin-1-yl]-1-oxopropan-2-yl]thiophene-2-carboxamide .
user
C19H20BrN3O4S
assistant