142383-53-7 9,19-Dioxabicyclo(16.1.0)nonadeca-4,6,12,14-tetraen-8-one, 10-(4,6-dihydroxy-8-methoxy-1,5,7-trimethylnonyl)-2,17-dihydroxy-3,5,7-trimethyl- FD 891 FD-891