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 2-[2-(1,3,5-trimethylpyrazol-4-yl)oxyacetyl]-3,4-dihydro-1H-isoquinoline-3-carboxylic acid .
user
C18H21N3O4
assistant