You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-1-[(4aR,8aS)-3,4,4a,5,6,7,8,8a-octahydro-1H-isoquinolin-2-yl]-3-[(2-chlorophenyl)methoxy]propan-2-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H28ClNO2
assistant