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-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)ethyl]-3-ethyl-1-methyl-1-[(2-methyl-1,3-thiazol-4-yl)methyl]guanidine .
user
C22H33N5O2S
assistant