1H-phenalen-1-one, 2-hydroxy-4-(4-methoxyphenyl)- 2-hydroxy-4-(4-methoxyphenyl)-1H-phenalen-1-one InChI=1/C20H14O3/c1-23-14-8-5-12(6-9-14)15-10-7-13-3-2-4-16-19(13)17(15)11-18(21)20(16)22/h2-11,21H,1H