You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[6-(bromomethyl)-2,2-dimethylmorpholin-4-yl]-(2,5-dichlorothiophen-3-yl)methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H14BrCl2NO2S
assistant