111396-93-1
5-(3,4-diethyl-5-methoxy-2-oxo-2,5-dihydropyrrol-5-ylmethylene)-3,4-diethylpyrrol-2(5H)-one
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111396-92-0
5-(3,4-diethyl-5-hydroxy-2-oxo-2,5-dihydropyrrol-5-ylmethylene)-3,4-diethylpyrrol-2(5H)-one