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

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Text this: Intramolecular Conjugate Ene Reaction of γ-Difluoromethyl- and γ-Trifluoromethyl-α,β-Unsaturated γ-Butyrolactones