You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-[(2R)-2-amino-3-sulfanylpropanoyl]-4-[(2,4-dichlorophenyl)methyl]piperidine-4-carboxylate;2,2,2-trifluoroacetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H23Cl2F3N2O5S
assistant