You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(6-amino-2-methylpyridin-3-yl)methyl]-2-[3-[2-(2-fluorophenyl)sulfinylhydrazinyl]-6-methyl-2-oxopyrazin-1-yl]acetamide into its molecular formula.
user
C20H22FN7O3S
assistant