tert-Butyl 6-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methylene)-1,4-oxazepane-4-carboxylate 50mg

tert-Butyl 6-((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)methylene)-1,4-oxazepane-4-carboxylate 50mg