How is oxo-[(5-oxoboranyloxy-2,4,6,8,10,12,13-heptaoxa-1,5,7,11-tetrabora-3$l^{2},9$l^{2}-dizincabicyclo[5.5.1]tridecan-11-yl)oxy]borane (CAS: 138265-88-0) typically synthesized?

This compound can be synthesized via multi-step organic and inorganic reactions involving boranes, zinc compounds, and oxo groups. Commonly, it involves the use of stoichiometric amounts of boron and zinc precursors, with careful control of reaction conditions to achieve high yield and selectivity. Detailed procedures are typically published in academic and industrial journals.