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-(3,4-dihydro-1H-isoquinolin-2-yl)propyl]-1-(1,1-dioxothiolan-3-yl)-3-ethylguanidine .
user
C19H30N4O2S
assistant