You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-(aminomethyl)-N-[3-chloro-4-[2-(diethylamino)-2-oxoethoxy]phenyl]oxane-4-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C19H28ClN3O4
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