You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-(5-ethylthiophen-2-yl)-2-[(4-methyl-5-pyridin-4-yl-1,2,4-triazol-3-yl)sulfanyl]ethanone .
user
C16H16N4OS2
assistant