diethyl ((Z)-2-butene-1-yl)methylmalonate

ethyl 2-methyl-2-carboethoxy-trans-4-hexenoate

but-2-enyl N,N-di(propan-2-yl)carbamate

(Z)-N,N-Diisopropylcarbamidsaeure-(2-butenylester)

2-but-2-enoxy-4,5-diphenyl-1,3-oxazole