1,3-Benzodioxan-2-carboxylic acid, 6-chloro-4-(m-chlorophenyl)-4-methyl-, methyl ester, (E)- 86616-98-0 RU 25961 trans-6-Chloro-4-(m-chlorophenyl)-4-methyl-1,3-benzodioxan-2-carboxylic acid methyl ester