You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)-2-(2-methoxyethylamino)ethanone;hydrochloride .
user
C16H25ClN2O4
assistant