You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 6-chloro-N-[(4,5-dimethylthiophen-2-yl)methyl]-3-nitropyridin-2-amine is given. What is its corresponding molecular formula?
user
C12H12ClN3O2S
assistant