You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3,4-dichlorophenyl)-N-methyl-1-(4,5,6,7-tetrahydro-1-benzothiophen-2-yl)methanamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H17Cl2NS
assistant