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Burst release of triamcinolone acetonide from nanoparticles was significantly minimized with incorporation of proper ratio of PDLLA in the existing triblock ( PCL - PEG - PCL ) copolymer .
 Chemical: triamcinolone acetonide; Chemical: PDLLA; Chemical: PCL; Chemical: PEG; Chemical: PCL
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: triamcinolone acetonide; Chemical: PDLLA; Chemical: PCL; Chemical: PEG; Chemical: PCL