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: Daily administration of desipramine increased the incidence of appearance of lidocaine - induced convulsions and decreased that of cocaine - induced convulsions .
### Output Text:
Daily administration of <span class="chemical">desipramine</span> increased the incidence of appearance of <span class="chemical">lidocaine</span> - induced convulsions and decreased that of <span class="chemical">cocaine</span> - induced convulsions . 