4H-1-benzopyran-4-one, 7-methoxy-3-phenyl- 7-methoxy-3-phenyl-4H-chromen-4-one InChI=1/C16H12O3/c1-18-12-7-8-13-15(9-12)19-10-14(16(13)17)11-5-3-2-4-6-11/h2-10H,1H