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 experience of this case , together with a review of the literature , suggests that FBAL is related to 5 - FU - induced cardiotoxicity .
### Output Text:
The experience of this case , together with a review of the literature , suggests that <span class="chemical">FBAL</span> is related to <span class="chemical">5 - FU</span> - induced cardiotoxicity . 