You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(ethylcarbamoyl)-2-[[5-methyl-4-(4-methylphenyl)-1,2,4-triazol-3-yl]sulfanyl]propanamide into its molecular formula.
user
C16H21N5O2S
assistant