for the following products
4-[(5,6,7,8-tetrahydro-3,5,5,8,8-pentamethyl-2-naphthalenyl)carbonyl]-3-benzoic acid methyl ester | Desmethylene oxo-bexarotene methyl ester and Methyl 4-[(5,6,7,8-tetrahydro-3,5,5,8,8-pentamethyl-2-naphthalenyl)carbonyl]benzoate