You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(3,4-dichlorophenyl)-N-methyl-N-(pyridin-2-ylmethyl)-1,2-thiazole-5-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H13Cl2N3OS
assistant