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  _  _      ___     ______      ___      ______  
 | \| ||   / _ \\  |      \\   / _ \\   /_   _// 
 |  ' ||  | / \ || |  --  //  | / \ ||    | ||   
 | .  ||  | \_/ || |  --  \\  | \_/ ||   _| ||   
 |_|\_||   \___//  |______//   \___//   /__//    
 `-` -`    `---`   `------`    `---`    `--`

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Text this: A simple route to optically pure 2,3-diaminobutane