You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-[4-[[3-[(2-chlorophenyl)methoxy]-5-methylphenoxy]methyl]piperidin-1-yl]methylidenehydrazine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H26ClN3O2
assistant