Propose an efficient synthesis for the following transformation: The transformation above can be performed with some reagent or combination of the reagents listed below: Give the necessary reagent(s) in the correct order;asa string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution; providejust one answer: NaNH2 Na, NH3 (I) dilute HzSO4 Hz, Lindlar's catalyst Mel H 1) BHz THF 2) H2Oz, HzO 1) xs NaNH2 2) HzO Br Br2