33987-21-2 Acetamide, 2,2-dichloro-N-(2-hydroxy-2-(4-nitrophenyl)-1-(1-oxopropoxy)methyl)ethyl)-, (R-(R*,R*)) Chloramphenicol 3-propionate D-threo-1-p-Nitrophenyl-2-dichloroacetamido-1-hydroxy-3-propionyloxypropane [French]