5627-27-0;AC1NQHY4;ETHYL 2-[(2-BUT-2-ENOYLOXYACETYL)AMINO]-4,5-DIMETHYL-THIOPHENE-3-CARBOXYLATE;ethyl 2-[(2-but-2-enoyloxyacetyl)amino]-4,5-dimethylthiophene-3-carboxylate
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