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, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. B RCO3H 1) RCO3H 2) H30* KMnO4 NaOH, cold D E F HBr, ROOR t-BuOK 1) BH 3.THE 2) H2O2, H20 G H Br2, hv NaOEt NASH