1,3-propanedione, 2-(dimethoxymethyl)-1,3-diphenyl- 2-(dimethoxymethyl)-1,3-diphenylpropane-1,3-dione InChI=1/C18H18O4/c1-21-18(22-2)15(16(19)13-9-5-3-6-10-13)17(20)14-11-7-4-8-12-14/h3-12,15,18H,1-2H