You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 5-chloro-N-[4-chloro-3-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-yl)phenyl]-1,3-dimethylpyrazole-4-carboxamide ?
user
C19H20Cl2N6O
assistant