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system
Provide the molecular formula for the IUPAC named substance 5-O-tert-butyl 1-O-[1-(2,5-dioxopyrrolidin-1-yl)oxy-1-oxopropan-2-yl] 2-[(2-methylpropan-2-yl)oxycarbonylamino]pentanedioate .
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C21H32N2O10
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