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 1-[2-[[4-amino-2-[(2,5-diamino-5-oxopentanoyl)amino]-4-oxobutanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carboxylic acid into molecular formula.
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C20H35N9O7
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