You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S,3R)-N-hydroxy-N'-(3-methyl-2,5-dioxoimidazolidin-1-yl)-3-(2-methylpropyl)-2-[(E)-3-phenylprop-2-enyl]butanediamide into molecular formula.
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C21H28N4O5
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