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: Neuroleptic - induced catalepsy , a model of neuroleptic - induced extrapyramidal side effects , was considered suitable as a model for predicting neuroleptic - induced akathisia in humans , although neuroleptic - induced catalepsy was not considered a specific test for neuroleptic - induced akathisia .
### Output Text:
Neuroleptic - induced catalepsy , a model of neuroleptic - induced extrapyramidal side effects , was considered suitable as a model for predicting neuroleptic - induced akathisia in humans , although neuroleptic - induced catalepsy was not considered a specific test for neuroleptic - induced akathisia . 