The molecule is a phenolate anion that is 2,3,5-trichlorobenzene-1,4-diol in which the hydroxy group that is ortho- to two chlorines has undergone deprotonation. The major species at pH 7.3. It is a conjugate base of a 2,3,5-trichlorobenzene-1,4-diol.
2,3,6-trichloro-4-hydroxyphenolate