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 _    _      ___      ______     ___     _    _   
| |  | ||   / _ \\   /_____//   / _ \\  | || | || 
| |/\| ||  / //\ \\  `____ `   | / \ || | || | || 
|  /\  || |  ___  || /___//    | \_/ || | \\_/ || 
|_// \_|| |_||  |_|| `__ `      \___//   \____//  
`-`   `-` `-`   `-`  /_//       `---`     `---`   
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Text this: Tandem organic light-emitting diode