You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N-[2-[2-[[2-amino-5-(diaminomethylideneamino)pentanoyl]amino]ethyldisulfanyl]ethyl]-2-(butanoylamino)-N'-[2-[2-(2,5-diaminopentanoylamino)ethyldisulfanyl]ethyl]pentanediamide is given. What is its corresponding molecular formula?
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C28H57N11O5S4
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