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: D - Glucarates were effective against renal damage induced by peptide antibiotics as well as various aminoglycoside antibitocis .
### Output Text:
<span class="chemical">D - Glucarates</span> were effective against renal damage induced by peptide antibiotics as well as various <span class="chemical">aminoglycoside</span> antibitocis . 