triethyl 2-cyano-1,2,3-propanetricarboxylate, 2-cyano-propane-1,2,3-tricarboxylic acid triethyl ester, triethyl 2-phosphono-2-butenoate, 2-Cyan-propan-1,2,3-tricarbonsaeure-triaethylester, 3-Cyano-3-ethoxycarbonylglutarsaeurediethylester, triethyl 2-phosphonobut-2-enoate
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