You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,4-dibromophenoxy)-N-methyl-N-[(4-oxo-3H-thieno[3,2-d]pyrimidin-2-yl)methyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H13Br2N3O3S
assistant