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 4-amino-5-[5-[[4-(1H-indol-3-yl)-2,5-dioxopyrrolidin-3-ylidene]amino]pentylamino]-5-oxopentanoic acid is given. What is its corresponding molecular formula?
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C22H27N5O5
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