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: Plasma and urinary lipids and lipoproteins during the development of nephrotic syndrome induced in the rat by puromycin aminonucleoside .
### Output Text:
Plasma and urinary lipids and lipoproteins during the development of nephrotic syndrome induced in the rat by <span class="chemical">puromycin aminonucleoside</span> . 