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chimie organique cour et exercices 1 bac · 2018. 10. 17. · CHEC-CH-CH3 Nc=c- CH -C - C-CH Xc=c- NCH-CH3 CH sc=cx H -CHECH2-CH3 CH-CH2-CH3 CH- -2.1 -1.2 CHECH -CH-CH3: CH CH3- c
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