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: Hepatocellular carcinoma in Fanconi ' s anemia treated with androgen and corticosteroid .
### Output Text:
Hepatocellular carcinoma in Fanconi ' s anemia treated with <span class="chemical">androgen</span> and <span class="chemical">corticosteroid</span> . 