3,7-dimethyl-6-oxooctanal

2,6-dimethyl-8,8-dimethyloctan-3-one

7-甲氧基-1H-吲哚-3-羧酸甲酯

methyl 3-(furan-2-yl)prop-2-enoate

5-甲酰基-2,4-二甲基-1H-吡咯-3-羧酸甲酯