You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1S)-1-(1,3-benzothiazol-2-yl)ethyl]-[2-[(2,4-dichlorophenyl)methylamino]-2-oxoethyl]-methylazanium into molecular formula.
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C19H20Cl2N3OS+
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