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

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Text this: Tandem organic light-emitting diode