In Virtually all types of tissue in every animal species, dioxin induces the production of enzymes that are the organism's trying to metabolize, or render harmless, the chemical that is irritating it. (E) attempt to metabolize, or render harmless, the chemical irritant.
Please help me to analyze the this sentence with answer E and translate it in Chinese, I am not sure what roles "or render harmeless," and "the chemical irritant" act as here.
dioxin induces the production of enzymes that are the organism’s attempt to metabolize,(the chemical irritant) or render (the chemical irritant) harmless, the chemical irritant