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 (2S)-1-[(1S)-1-(2-chlorophenyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl]-2-methylpentan-1-one .
user
C23H28ClNO3
assistant