Conider the sequence of reactions shown below. What is the structure of Compound X? Write your answer in the empty box below. Furthermore, propose a mechanism for the conversion of Compound Y into Compound Z under the reaction conditions indicated. Use normal curved arrows to show movement of electron pairs, and be sure to draw structures of all important reaction intermediates. If an intermediate is a resonance hybrid, it is only necessary to draw the MOST IMPORTANT contributing resonance structure.