1,4,7-Trihydroxy-3,9-dimethoxy-benzo[c]chromen-6-one 1,4,7-trihydroxy-3,9-dimethoxy-6H-benzo[c]chromen-6-one 6H-dibenzo[b,d]pyran-6-one, 1,4,7-trihydroxy-3,9-dimethoxy- Graphislactone E InChI=1/C15H12O7/c1-20-6-3-7-11-9(17)5-10(21-2)13(18)14(11)22-15(19)12(7)8(16)4-6/h3-5,16-18H,1-2H