You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-N-[3-[(2,4-dichlorophenyl)methylsulfanyl]-5-methyl-1,2,4-triazol-4-yl]-1-(4-methoxyphenyl)methanimine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H16Cl2N4OS
assistant