17867
Polyethylene glycol monosubstituted with a polymerizable acrylic moiety was linked to 6 - carboxy free position on dextran side chains and then subjected to radical polymerization with a comonomer in order to obtain microspheres for the oral controlled release of ketoconazole , a hydrophobic model drug .
 Chemical: Polyethylene glycol; Chemical: acrylic; Chemical: 6 - carboxy; Chemical: ketoconazole
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: Polyethylene glycol, acrylic, 6 - carboxy, ketoconazole 
Answer:
 Chemical: Polyethylene glycol; Chemical: acrylic; Chemical: 6 - carboxy; Chemical: ketoconazole