You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-chloro-4-methylphenyl)-N'-[(1S)-1-(3-methyl-1,2,4-oxadiazol-5-yl)propyl]propanediamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H19ClN4O3
assistant