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 (6R,9R)-9-(4-chlorophenyl)-6-(3,4-dimethoxyphenyl)-5,6,7,9-tetrahydro-4H-[1,2,4]triazolo[5,1-b]quinazolin-8-one .
user
C23H21ClN4O3
assistant