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

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Text this: A stable heptacene derivative substituted with electron-deficient trifluoromethylphenyl and triisopropylsilylethynyl groups