You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 3-[2-(2,4-dimethyl-1,4-diazepan-1-yl)-1,3-thiazol-4-yl]propanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H25N3O2S
assistant