You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-bromo-N-[[5-(2,6-dioxopiperidin-3-yl)-6-oxo-4H-thieno[3,4-c]pyrrol-3-yl]methyl]acetamide ?
user
C14H14BrN3O4S
assistant