You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 5,6-dichloro-N-[2-(2,6-dimethylanilino)-2-oxoethyl]pyridine-3-carboxamide is given. What is its corresponding molecular formula?
user
C16H15Cl2N3O2
assistant