You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4S,4aR)-4-phenyl-1-[5-(trifluoromethyl)pyridin-2-yl]-2,3,4a,5,6,7,8,8a-octahydroquinolin-4-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23F3N2O
assistant