You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-[3-(3-bromopyridin-2-yl)oxypyrrolidin-1-yl]-4-methylsulfanyl-1-oxobutan-2-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H22BrN3O3S
assistant