You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(2S)-1-[(5-bromothiophen-2-yl)methyl-methylamino]-1-oxopropan-2-yl]-2-chlorobenzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H16BrClN2O2S
assistant