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

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Text this: Synthesis and properties of phospha[5]helicenes bearing an inner-rim phosphorus center