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 1-(3,4-dihydro-2H-chromen-4-yl)-3-[2-(dimethylamino)-2-(1-methylpyrazol-4-yl)ethyl]-2-methylguanidine .
user
C19H28N6O
assistant