You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2R)-2-(3,4-dichlorophenyl)-1-(2-methoxypyridin-3-yl)-3-(methylamino)propan-1-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H18Cl2N2O2
assistant