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 neurotoxic esterase inhibition and mipafox - induced neuropathic damage in rats .
### Output Text:
The correlation between neurotoxic esterase inhibition and <span class="chemical">mipafox</span> - induced neuropathic damage in rats . 