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: In conclusion , this is a first report of NSAIDs - associated ATIN , showing deposits of granular immune complex present only in the TBM and not in the glomeruli .
### Output Text:
In conclusion , this is a first report of NSAIDs - associated ATIN , showing deposits of granular immune complex present only in the TBM and not in the glomeruli . 