23. A certain alkene (C7H14) exhibits se..-阿摩線上測驗
23. A certain alkene (C7H14) exhibits seven signals in its proton-coupled ¹³C nuclear magnetic resonance spectrum. Of the seven signals, two are quartets, one is a singlet, and four are triplets. Which of the following structures is consistent with these data? (Please refer to the actual exam paper for the structures)