You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(4-amino-5-pyridin-3-yl-1,2,4-triazol-3-yl)sulfanyl]-N-(4-butylphenyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22N6OS
assistant