You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-1-(2,4-dichlorophenyl)sulfanyl-3-(5-ethylpyridin-3-yl)oxypropan-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H18Cl2N2OS
assistant