23149
However , undesired slow drug release impedes the therapeutic efficacy of clinically applied PEG - liposomal doxorubicin ( Dox ) .
 Chemical: PEG; Chemical: doxorubicin; Chemical: Dox
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: PEG, doxorubicin, Dox 
Answer:
 Chemical: PEG; Chemical: doxorubicin; Chemical: Dox