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: The acute cytolytic hepatitis occurred rapidly after meloxicam administration and was associated with the development of antinuclear antibodies suggesting a hypersensitivity mechanism .
### Output Text:
The acute cytolytic hepatitis occurred rapidly after <span class="chemical">meloxicam</span> administration and was associated with the development of antinuclear antibodies suggesting a hypersensitivity mechanism . 