You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-chloro-6-(dimethylamino)-N-(6-methyl-1,3-benzothiazol-2-yl)pyridine-4-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C16H15ClN4OS
assistant