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: Information regarding midazolam use is reviewed to provide recommendation for safe administration .
### Output Text:
Information regarding <span class="chemical">midazolam</span> use is reviewed to provide recommendation for safe administration . 