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: Why may epsilon - aminocaproic acid ( EACA ) induce myopathy in man ?
### Output Text:
Why may <span class="chemical">epsilon - aminocaproic acid</span> ( <span class="chemical">EACA</span> ) induce myopathy in man ? 