204. Ethyl-bis(4-hydroxy-2-oxo-2H-chromen-3-yl)acetát** a soli odpovídající kyseliny;
Ethyl-bis(4-hydroxy-2-oxo-1-benzopyran-3-yl)acetate and salts of the acid***
204. Ethyl-bis(4-hydroxy-2-oxo-2H-chromen-3-yl)acetát** a soli odpovídající kyseliny;
Ethyl-bis(4-hydroxy-2-oxo-1-benzopyran-3-yl)acetate and salts of the acid***