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Ch2-h2c-ch2. C2h2 +02. H2c-ch2-ch2-h2c. Ch4 c2h4 h2.
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C bc h
C h o co h o
H c al
C 8 h 10
C h соединение
C h cl
C 6 h 10
H ab c
Z v o o c h
C h 3 c l
Ch2-h2c-ch2. C2h2 +02. H2c-ch2-ch2-h2c. Ch4 c2h4 h2. 