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Text this: Facile metal-mediated synthesis of macrocyclic diselenoethers

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

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