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 N-[2-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)ethyl]-2-ethyl-5-propan-2-ylpyrazole-3-carboxamide ?
user
C22H32N4O3
assistant