You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(1-oxidopyridin-1-ium-2-yl)sulfanyl-N-[3-(2,3,5-trimethylphenoxy)propyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H24N2O3S
assistant