You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2,2-dimethyl-N-[6-[1-[(Z)-[(1-methyltetrazol-5-yl)-phenylmethylidene]amino]oxyethyl]pyridin-2-yl]propanamide .
user
C21H25N7O2
assistant