77306-12-8 Benzoic acid, 2-(acetyloxy)-, mixt. with N,N-dimethyl-N'-2-pyridinyl-N'-(2-thienylmethyl)-1,2-ethanediamine (E)-2-butenedioate (2:3), 2-hydroxybenzamide and N-(4-hydroxyphenyl)acetamide Excedrin P.M.