21380
Here , we synthesize several Eudragit E PO ( n - butyl - , dimethylaminoethyl - , methyl - methacrylate - terpolymer ) analogues via free radical polymerization .
 Chemical: Eudragit E PO; Chemical: n - butyl; Chemical: dimethylaminoethyl; Chemical: methyl - methacrylate; Chemical: terpolymer
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: Eudragit E PO; Chemical: n - butyl; Chemical: dimethylaminoethyl; Chemical: methyl - methacrylate; Chemical: terpolymer