(4E)-1,7-bis(3,4-dihydroxyphenyl)hept-4-en-3-one 1,7-Bis-(3,4-dihydroxy-phenyl)-hept-4-en-3-one 1,7-Di-(3',4'-dihydroxyphenyl)-4-hepten-3-one 4-hepten-3-one, 1,7-bis(3,4-dihydroxyphenyl)-, (4E)- Hirsutanone InChI=1/C19H20O5/c20-15(8-5-14-7-10-17(22)19(24)12-14)4-2-1-3-13-6-9-16(21)18(23)11-13/h2,4,6-7,9-12,21-24H,1,3,5,8H2/b4-2