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Tetrahydrocurcumin ( THC ) , the hydrogenated and stable form of curcumin , exhibits physiological and pharmacological activities similar to curcumin .
 Chemical: Tetrahydrocurcumin; Chemical: THC; Chemical: curcumin; Chemical: curcumin
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: Tetrahydrocurcumin; Chemical: THC; Chemical: curcumin; Chemical: curcumin