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: She was diagnosed with right LACNP ( mainly axonal involvement ) on the basis of the clinical manifestation and the electrodiagnostic findings .
### Output Text:
She was diagnosed with right LACNP ( mainly axonal involvement ) on the basis of the clinical manifestation and the electrodiagnostic findings . 