5408-46-8

1-Hydroxy-7,8,9,10-tetrahydro-6H-dibenzo[c,h]chromen-6-one 1-hydroxy-7,8,9,10-tetrahydronaphtho[1,2-c]isochromen-6-one 6H-Benzo[d]naphtho[1,2-b]pyran-6-one, 7,8,9,10-tetrahydro-1-hydroxy- 15-hydroxy-9-oxatetracyclo[8.8.0.0^{2,7}.0^{11,16}]octadeca-1(18),2(7),10,12,14,16-hexaen-8-one