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 [2-(3,4-dihydro-1H-isoquinolin-2-yl)-2-oxoethyl] 2-(3,5-dimethyl-4-nitropyrazol-1-yl)acetate .
user
C18H20N4O5
assistant