1,2-bis(4-methoxyphenyl)ethane-1,2-dione 1,2-ethanedione, 1,2-bis(4-methoxyphenyl)- 1226-42-2 InChI=1/C16H14O4/c1-19-13-7-3-11(4-8-13)15(17)16(18)12-5-9-14(20-2)10-6-12/h3-10H,1-2H