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 4-chloro-1-N,1-N-dimethyl-2-N-(1-methyl-4,5,6,7-tetrahydroindazol-4-yl)benzene-1,2-diamine .
user
C16H21ClN4
assistant