2,3-二甲基-2,3-二苯基丁烷

methyl 4-methyl-2-methylene-4-phenylpentanoate

(E)-methyl 2,4-dimethyl-4-phenylpent-2-enoate

methyl 2,4-dimethyl-2-(1'-methyl-1'-phenylethyl)-4-phenylpentanoate