5158
In spite of the lack of information on metabolic pattern of the various compounds , some of 5 - HT6 receptor ligands entered the clinical development as potential anti - dementia , antipsychotic , antidepressant and anti - obese drugs .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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