You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[2-[[2-[(2-amino-3-methylbutanoyl)amino]-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxypropanoic acid into its molecular formula.
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C20H40N10O6
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