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The objective of this study was to prepare the nanocrystals of curcumin didecanoate ( CurDD ) by wet ball milling and to investigate the comparative pharmacokinetics of oily nano - and micro - suspensions after intramuscular ( i . m . ) administration to rats .
 Chemical: curcumin didecanoate; Chemical: CurDD
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: curcumin didecanoate; Chemical: CurDD