10-Hydroxy-8-methoxy-3,3,5-trimethyl-3H-4,11-dioxa-chrysen-12-one 10-hydroxy-8-methoxy-3,3,5-trimethyl-3H,12H-benzo[h]pyrano[3,2-c]chromen-12-one 3H,12H-naphtho[1,2-b]pyrano[2,3-d]pyran-12-one, 10-hydroxy-8-methoxy-3,3,5-trimethyl- InChI=1/C20H18O5/c1-10-7-11-8-12(23-4)9-14(21)16(11)18-15(10)17-13(19(22)24-18)5-6-20(2,3)25-17/h5-9,21H,1-4H Vismiaguianin A