AC1L7H8C;91480-71-6;methyl 4-[4-(4-methoxy-4-oxobut-2-enoyl)-2,5-dimethylpiperazin-1-yl]-4-oxobut-2-enoate;METHYL 4-[4-(3-METHOXYCARBONYLPROP-2-ENOYL)-2,5-DIMETHYL-PIPERAZIN-1-YL]-4-OXO-BUT-2-ENOATE
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