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 2,6-difluoro-3-[3,3,3-trifluoro-2-hydroxy-1-[(2-methylquinolin-5-yl)amino]-2-(methylsulfanylmethyl)propyl]phenol .
user
C21H19F5N2O2S
assistant