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system
Name the molecular formula for the molecule established as 2-[[2-[[2-(2,6-diaminohexanoylamino)-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-phenylpropanoic acid using the IUPAC nomenclature.
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C27H47N11O5
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