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

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發送短信 : An Expeditious and Green Synthesis of 3,3¢-(Arylmethylene)-bis-(4-hydroxycoumarins) Catalyzed by 5-Sulfosalicylic Acid