أرسل هذا في رسالة قصيرة: Synthesis, physical properties, and anion recognition of two novel larger azaacenes : benzannelated hexazaheptacene and benzannelated N,N'-dihydrohexazaheptacene

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