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: Predictors of decreased renal function in patients with heart failure during angiotensin - converting enzyme inhibitor therapy : results from the studies of left ventricular dysfunction ( SOLVD )
### Output Text:
Predictors of decreased renal function in patients with heart failure during <span class="chemical">angiotensin</span> - converting enzyme inhibitor therapy : results from the studies of left ventricular dysfunction ( SOLVD ) 