You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[(6-bromo-2-thiophen-2-ylimidazo[1,2-a]pyridin-3-yl)amino]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H14BrN3O2S
assistant