1-(2-hydroxyphenyl)-4-methyl-5-phenylpenta-2,4-dien-1-one 2,4-pentadien-1-one, 1-(2-hydroxyphenyl)-4-methyl-5-phenyl- InChI=1/C18H16O2/c1-14(13-15-7-3-2-4-8-15)11-12-18(20)16-9-5-6-10-17(16)19/h2-13,19H,1H3/b12-11+,14-13