You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [2-[(4-chlorophenyl)methylamino]-2-oxoethyl]-[2-(cyclopropylamino)-2-oxoethyl]-methylazanium is given. What is its corresponding molecular formula?
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C15H21ClN3O2+
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