29369
Porphyrins prevent activation of hypoxia inducible factor - 1 alpha ( HIF - 1 alpha ) by inhibiting heat shock protein 90 ( HSP90 ) .
 Chemical: Porphyrins
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Porphyrins