methyl 2-(7-methoxy-2-oxochromen-4-yl)acetate

Homocamptothein

dimethyl (E)-3-aminopent-2-enedioate

3-(5,7-dimethoxy-2-oxochromene-3-carbonyl)-5,7-dimethoxychromen-2-one

3,3-羰基二(7-甲氧基香豆素)