أرسل هذا في رسالة قصيرة: BINDING OF CROWN ETHER Bz9C3, Bz12C4 AND Bz15C5 TO CATIONS BASED ON SEMIEMPIRICAL ORBITAL MOLECULAR CALCULATIONS

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