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

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發送短信 : A crystalline B₄N₂ dewar benzene as a building block for conjugated B,N-chains