4-甲氧基羰基甲基哌嗪-1-羧酸叔丁酯

methyl 3-ethyl-3-hydroxypentanoate

methyl 1-hydroxy-1-(2-methoxy-2-oxoethyl)-2-methyl-3,4-dihydrophenanthrene-2-carboxylate

methyl 2-(2-oxo-3a,4,5,6-tetrahydro-3H-benzo[1,2]cyclohepta[4,6-c]furan-10b-yl)acetate

methyl 3-hydroxy-3-phenylpropanoate