You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[(4-bromothiophen-2-yl)methyl]pyrazol-3-yl]-3-(2-methylpropoxy)propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H20BrN3O2S
assistant