Bis(trichloroacetic acid)ethylene ester

2-(2,2,2-trichloroacetyl)oxyethyl 2,2,2-trichloroacetate

2-(2,2,2-trichloroethanoyloxy)ethyl 2,2,2-trichloroethanoate

2,2,2-trichloroacetic acid 2-(2,2,2-trichloroacetyl)oxyethyl ester