benzyl 2,4-bis(benzyloxy)benzoate

2,7-dinitroxanthen-9-one

5-hydroxy-2,2-dimethylchromene-6-carboxylic acid

7-hydroxy-2,2-dimethyl-2H-1-benzopyran-6-carboxylic acid

4-(1,3-dihydrobenzimidazol-2-ylidene)-3-hydroxycyclohexa-2,5-dien-1-one