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 here the first case of Dexatrim ( PPA ) - induced myocardial injury in a young woman who was using it at recommended doses for weight control .
### Output Text:
We report here the first case of <span class="chemical">Dexatrim</span> ( <span class="chemical">PPA</span> ) - induced myocardial injury in a young woman who was using it at recommended doses for weight control . 