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(2007/10/02)trans-4-aminomethyl-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidin-1-oxyl
trans-3-methoxycarbonyl-2,2,5,5-tetramethyl-4-nitromethylpyrrolidin-1-oxyl
methyl 1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-carboxylate radical
trans-4-maleimidomethyl-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidin-1-oxyl