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(2015/02/06)[2-(1-Acetoxy-allyl)-5-oxo-pyrrolidin-1-yl]-(triphenyl-λ5-phosphanylidene)-acetic acid 4-nitro-benzyl ester
(1S,7aR)-1-Acetoxy-5-oxo-5,6,7,7a-tetrahydro-1H-pyrrolizine-3-carboxylic acid 4-nitro-benzyl ester
5-(1-Hydroxy-allyl)-1-[methoxy-(4-methoxy-phenyl)-methyl]-pyrrolidin-2-one
1-[Methoxy-(4-methoxy-phenyl)-methyl]-5-oxo-pyrrolidine-2-carbaldehyde
p-nitrobenzyl glyoxylate