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 effect of amiloride on lithium - induced polydipsia and polyuria and on the lithium concentration in the plasma , brain , kidney , thyroid and red blood cells was investigated in rats , chronically treated with LiCl .
### Output Text:
The effect of <span class="chemical">amiloride</span> on <span class="chemical">lithium</span> - induced polydipsia and polyuria and on the <span class="chemical">lithium</span> concentration in the plasma , brain , kidney , thyroid and red blood cells was investigated in rats , chronically treated with <span class="chemical">LiCl</span> . 