rac-9,10-methanediyldioxy-galanth-3(12)-en-7-one

4-vinyl-1-(6-vinyl-benzo[1,3]dioxole-5-carbonyl)-2,3-dihydro-pyrrole

2-(2,4-cyclohexadienyl)acetic acid methyl ester

dimethyl (cis-4-acetoxycyclohex-2-en-1-yl)malonate