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 4-(5-chloro-1,3-benzodioxol-4-yl)-2-N-(3-chloro-4-morpholin-4-ylphenyl)-1H-pyrimidine-2,4-diamine into molecular formula.
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C21H21Cl2N5O3
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