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   _____    _____     ____     __   __    ____    
  / ___//  |  ___||  |  _ \\   \ \\/ //  |  _ \\  
  \___ \\  | ||__    | |_| ||   \ ` //   | |_| || 
  /    //  | ||__    | .  //     | ||    | .  //  
 /____//   |_____||  |_|\_\\     |_||    |_|\_\\  
`-----`    `-----`   `-` --`     `-`'    `-` --`

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Text this: Facile metal-mediated synthesis of macrocyclic diselenoethers