You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(4-chlorophenoxy)ethyl]-2-[(4-cyclopropyl-5-oxo-1H-1,2,4-triazol-3-yl)sulfanyl]-N-methylacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H19ClN4O3S
assistant