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: Capsaicin ( 0 . 01 - 1 mm ) applied to oral or nasal mucosa induced increases in dural and cortical blood flow and provoked lacrimation .
### Output Text:
<span class="chemical">Capsaicin</span> ( 0 . 01 - 1 mm ) applied to oral or nasal mucosa induced increases in dural and cortical blood flow and provoked lacrimation . 