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: Fatal carbamazepine induced fulminant eosinophilic ( hypersensitivity ) myocarditis : emphasis on anatomical and histological characteristics , mechanisms and genetics of drug hypersensitivity and differential diagnosis .
### Output Text:
Fatal <span class="chemical">carbamazepine</span> induced fulminant eosinophilic ( hypersensitivity ) myocarditis : emphasis on anatomical and histological characteristics , mechanisms and genetics of drug hypersensitivity and differential diagnosis . 