You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(4-bromothiophen-2-yl)methyl]-5-(chloromethyl)-N-methyl-1,3,4-oxadiazol-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C9H9BrClN3OS
assistant