You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[7-bicyclo[4.2.0]octa-1,3,5-trienyl-(4-bromo-5-chlorothiophen-2-yl)methyl]ethanamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H15BrClNS
assistant