In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: The correlation between neuropathic damage and inhibition of neurotoxic esterase or neuropathy target enzyme ( NTE ) was examined in rats acutely exposed to Mipafox ( N , N ' - diisopropylphosphorodiamidofluoridate ) , a neurotoxic organophosphate .
### Output Text:
The correlation between neuropathic damage and inhibition of neurotoxic esterase or neuropathy target enzyme ( NTE ) was examined in rats acutely exposed to <span class="chemical">Mipafox</span> ( <span class="chemical">N , N ' - diisopropylphosphorodiamidofluoridate</span> ) , a neurotoxic <span class="chemical">organophosphate</span> . 