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: The patient is a 24 - year - old male with a history of schizophrenia who developed signs and symptoms of NMS after 2 days of treatment with an 80 - mg / day dose of orally administrated ziprasidone .
### Output Text:
The patient is a 24 - year - old male with a history of schizophrenia who developed signs and symptoms of NMS after 2 days of treatment with an 80 - mg / day dose of orally administrated <span class="chemical">ziprasidone</span> . 