Ch3 c c ch3 h2. Ch3 ch3 - ch2 - ch - ch2 - ch - c= ch ch3 ch3. ch2 ch2 h2 ch3 ch3. ch3-ch2-ch2-ch2-ch-ch3-ch3.

Ch3 c c ch3 h2. Ch3 ch3 - ch2 - ch - ch2 - ch - c= ch ch3 ch3. ch2 ch2 h2 ch3 ch3. ch3-ch2-ch2-ch2-ch-ch3-ch3.
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