2-(3-methylene-7-oxabicyclo[2.2.1]hept-5-en-2-yl)propan-2-ol

甲醛

2-甲基-3-丁炔-2-醇

2-methyl-5-[(tetrahydro-2H-pyran-2-yl)-oxy]-3-pentyn-2-ol

2-bromo-1,1-dimethyl-3-methylidenecyclopropane