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: We report the case of a patient with amoxicillin - clavulanic acid - induced hepatitis with histologic multiple granulomas .
### Output Text:
We report the case of a patient with <span class="chemical">amoxicillin - clavulanic acid</span> - induced hepatitis with histologic multiple granulomas . 