24280
2 - ( 1H - Pyrazol - 4 - yl ) acetic acids as CRTh2 antagonists .
 Chemical: 2 - ( 1H - Pyrazol - 4 - yl ) acetic acids
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: 2 - ( 1H - Pyrazol - 4 - yl ) acetic acids