benzyl N-(4-ethenyl-3,5-difluorophenyl)carbamate

6-methyl-9-(oxan-2-yl)purine

diethyl 3,4-bis(ethenyl)cyclopent-3-ene-1,1-dicarboxylate

2,6-dimethyl-4-methylidenehepta-2,5-diene

2,5-dimethylhexa-1,4-diene