英文名称
2-bromo-1-methyl-3-methylidenecyclopentene;2-chloro-1-methyl-3-methylidenecyclopentene;1-ethyl-6-methoxy-3-methyl-5-(2-methyl-5-methylidenecyclopenten-1-yl)pyrimidine-2,4-dione;1-(2-methyl-5-methylidenecyclopenten-1-yl)pyrrolidine;N,N,2-trimethyl-5-methylidenecyclopenten-1-amine