Home1-{6-Phenyl-3aH,4H,6H,8H,8aH-[1,3]dioxepino[5,6-d][1,2]oxazol-3-yl}ethan-1-one1-{6-Phenyl-3aH,4H,6H,8H,8aH-[1,3]dioxepino[5,6-d][1,2]oxazol-3-yl}ethan-1-one, tech