异丁酸异戊酯

(2Z)-2-(hydroxymethylidene)-4,7,7-trimethylbicyclo[2.2.1]heptan-3-one

(2Z)-2-(hydroxymethylidene)-10,13-dimethyl-17-(6-methylheptan-2-yl)-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one

3,5-二甲基-2-吡咯甲醛

2-oxocyclohexane-1-carbaldehyde