You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(5-ethyl-4-methyl-1,2,4-triazol-3-yl)sulfanylmethyl]-2-(4-methylphenyl)-1,3-thiazole is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H18N4S2
assistant