the synthesis above can be performed with some combination of the reagents listed below. give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation). be sure to consider stereochemistry and regiochemistry. a. hbr b. br2, ccl4 c. nac2h d. h2, lindlar e. 9-bbn then h2o2, naoh f. hg(oac)2, h2o then nabh4 g. o3, then water h. xs nanh2, then water