CAS No. 14238-47-2
2-Cyclobuten-1-one,2-(4-acetyl-3,5-dimethyl-1H-pyrrol-2-yl)-4-(4-acetyl-3,5-dimethyl-2H-pyrrol-2-ylidene)-3-hydroxy-
2-Cyclobuten-1-one,2-(4-acetyl-3,5-dimethyl-1H-pyrrol-2-yl)-4-(4-acetyl-3,5-dimethyl-2H-pyrrol-2-ylidene)-3-hydroxy-
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