You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[[5-[(2-chlorophenyl)methylsulfanyl]-4-(2-methylpropyl)-1,2,4-triazol-3-yl]methyl]furan-2-carboxamide into its molecular formula.
user
C19H21ClN4O2S
assistant