ethyl 2,2-dimethyl-4-phenylbut-3-enoate

2,2-二甲基-3-苯丙酸

ethyl 2,2-dimethyl-3-oxopentanoate

N-(2-amino-2-methylpropyl)-2-methylpropanamide

ethyl 2,2-dimethylbut-3-enoate