propose an efficient synthesis for the following transformation:

Propose an efficient synthesis for the following transformation: vi 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 A B C Na,Cr, H2SO4 H20 Ha Lindlar's catalyst NaNHz D E F 110) 2) DMS BE 1) RBH 2) H2O2, NaOH H 1) E MBI 2) H30 HO. H2SO.HgSO4