發送短信 : Experiment 3: Bromination nd debromination of cholesterol (addition, elimination)

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