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 showed a significant increase in escape latencies and traveled distances to find platform in scopolamine - treated group as compared to saline group .
### Output Text:
The results showed a significant increase in escape latencies and traveled distances to find platform in <span class="chemical">scopolamine</span> - treated group as compared to saline group . 