(2E)-1,3-bis(2-hydroxyphenyl)prop-2-en-1-one 2-propen-1-one, 1,3-bis(2-hydroxyphenyl)-, (2E)- InChI=1/C15H12O3/c16-13-7-3-1-5-11(13)9-10-15(18)12-6-2-4-8-14(12)17/h1-10,16-17H/b10-9