Compound 3
From the following article
Michael B Austin, Tamao Saito, Marianne E Bowman, Stephen Haydock, Atsushi Kato, Bradley S Moore, Robert R Kay & Joseph P Noel
Nature Chemical Biology 2, 494-502 (2006) Published online: 13 August 2006
doi:10.1038/nchembio811

Compound 3
3-(4-Hydroxy-phenyl)-1-(2,4,6-trihydroxy-phenyl)-propenone
