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 3-[2-[(4R)-6,8-dichloro-2-cyclopropyl-3,4-dihydro-1H-isoquinolin-4-yl]phenyl]-2H-1,3-thiazole .
user
C21H20Cl2N2S
assistant