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 methyl (2R)-4-methyl-2-[[2-[(4R)-4-methyl-3-(4-methylphenyl)-2,5-dioxoimidazolidin-1-yl]acetyl]amino]pentanoate is given. What is its corresponding molecular formula?
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C20H27N3O5
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