أرسل هذا في رسالة قصيرة: ZETHRENE AND EXTENDED ZETHRENE BASED DIRADICALOIDS AND TETRARADICALOIDS

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