You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-(3,4-dimethylphenyl)-4-[4-(6-pyridin-4-ylpyridazin-3-yl)piperazine-1-carbonyl]pyrrolidin-2-one ?
user
C26H28N6O2
assistant