You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [5-(aminomethyl)-2-methyl-4-(4-methylphenyl)-6-(2-methylpropyl)pyridin-3-yl]methylphosphonic acid;dihydrochloride by IUPAC nomenclature, provide its molecular formula.
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C19H29Cl2N2O3P
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