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: This suggests that bromocriptine should be further evaluated as potential therapy for neuroleptic - associated hyperprolactinemia and amenorrhea / galactorrhea .
### Output Text:
This suggests that <span class="chemical">bromocriptine</span> should be further evaluated as potential therapy for <span class="chemical">neuroleptic</span> - associated hyperprolactinemia and amenorrhea / galactorrhea . 