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 _    _    _    _    _    _      ___              
| |  | || | || | || | \  / ||   / _ \\      ___   
| |/\| || | || | || |  \/  ||  / //\ \\    /   || 
|  /\  || | \\_/ || | .  . || |  ___  ||  | [] || 
|_// \_||  \____//  |_|\/|_|| |_||  |_||   \__ || 
`-`   `-`   `---`   `-`  `-`  `-`   `-`     -|_|| 
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Text this: Facile metal-mediated synthesis of macrocyclic diselenoethers