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: NRA0160 and clozapine antagonized locomotor hyperactivity induced by methamphetamine ( MAP ) in mice .
### Output Text:
<span class="chemical">NRA0160</span> and <span class="chemical">clozapine</span> antagonized locomotor hyperactivity induced by <span class="chemical">methamphetamine</span> ( <span class="chemical">MAP</span> ) in mice . 