3-benzoyl-6-chloro-2-[(E)-2-(dimethylamino)vinyl]-4H-chromen-4-one 4H-1-benzopyran-4-one, 3-benzoyl-6-chloro-2-[(E)-2-(dimethylamino)ethenyl]- InChI=1/C20H16ClNO3/c1-22(2)11-10-17-18(19(23)13-6-4-3-5-7-13)20(24)15-12-14(21)8-9-16(15)25-17/h3-12H,1-2H3/b11-10