Photos 3 Х ДВА

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3 х два. Ch3 ch2 Oh h2so4 кат. T<140. Пентанон 3 h2so4 150. Ch3 Ch Oh ch2 140. Ch3chohch3 t>140.
Ch3 ch2 Oh h2so4 кат. T<140. Пентанон 3 h2so4 150. Ch3 Ch Oh ch2 140. Ch3chohch3 t>140.

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