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C6h6 c6h5ch ch3. C6h5ch-ch3 kmno4 h2so4. C6h5ch3 c6h5cooh. O2 кат c6h5ch3.
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C6h6 c6h5ch ch3. C6h5ch-ch3 kmno4 h2so4. C6h5ch3 c6h5cooh. O2 кат c6h5ch3. 