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 results indicate that GFC can exert anticonvulsant activity and reduce the frequency of installation of pilocarpine - induced status epilepticus , as demonstrated by increase in latency to first seizure and decrease in mortality rate of animals .
### Output Text:
The results indicate that <span class="chemical">GFC</span> can exert anticonvulsant activity and reduce the frequency of installation of <span class="chemical">pilocarpine</span> - induced status epilepticus , as demonstrated by increase in latency to first seizure and decrease in mortality rate of animals . 