You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-N-(2-chloro-4,6-dimethylphenyl)-2-[(4-phenyl-1,2,4-triazol-3-yl)sulfanyl]propanamide by IUPAC nomenclature, provide its molecular formula.
user
C19H19ClN4OS
assistant