You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 6-chloro-2-(1-methyl-3,6-dihydro-2H-pyridin-4-yl)-N-(2-morpholin-4-ylsulfonylethyl)-1H-2,7-naphthyridin-4-amine into molecular formula.
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C20H28ClN5O3S
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