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已收录的包裹(7个)

上面是输入字符,下面是格式化后的字符

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1. c6h3ohch2

    c6h3ohch2

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2. c6h3ohch2+nh2o

    c6h3ohch2+nh2o

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3. ch2-ch=c-ch2

    ch2-ch=c-ch2

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4. ch2-ch=ch-ch2

    ch2-ch=ch-ch2

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5. ch2-ch2

    ch2-ch2

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6. ch2-chcl

    ch2-chcl

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7. ch-ch2

    ch-ch2