ethyl 4,6,6-trimethyl-2-oxocyclohex-3-ene-1-carboxylate

ethyl 2-(3,3,5,5-tetramethylcyclohexylidene)acetate

(3,5,5-三甲基环己-2-烯亚基)丙二腈

甲苯

间-5-二甲苯酚