2-(2-Hydroxy-4-methoxy-phenyl)-benzofuran-6-ol 6,6\'-Dihydroxy-4\'-methoxy-2-arylbenzofuran Bolusanthin IV InChI=1/C15H12O4/c1-18-11-4-5-12(13(17)8-11)15-6-9-2-3-10(16)7-14(9)19-15/h2-8,16-17H,1H