You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[3-(4-methylpiperidin-1-yl)pyrazin-2-yl]oxyphenyl]-1,3-benzothiazol-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H23N5OS
assistant