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(2007/10/03){4-[(5-mercaptocarbonimidoyl-benzofuran-2-carbonyl)-methyl-amino]-phenoxy}-acetic acid tert-butyl ester
t-butyl 4-[(5-cyano-2-benzofuranyl)carbonyl-N-methylamino]phenoxyacetate
tert-butyl (4-succinimidomethylamino)phenoxyacetate
tert-butyl 4-(methylamino)phenoxyacetate
tert-butyl 2-(4-aminophenoxy)acetate