juvabione is produced by fire trees of the genus abies and is known to inhibit insect reproduction and growth, thereby offering the trees some protection from insect infestations. one laboratory synthesis of juvabione involved the conversion of compound 1 and compound 3, as shown. identify reagents that can be used to convert 1 into 2, 2 into 3, and 3 into 4 (juvabione) in the boxes provided. draw a detailed arrow-pushing mechanism to provide the major product or intermediates [step by step, draw all the intermediates] for the following reactions.