8144
A new class of non - ionic dendronized multiamphiphilic polymers is prepared from a biodegradable ( AB ) n - type diblock polymer synthesized from 2 - azido - 1 , 3 - propanediol ( azido glycerol ) and polyethylene glycol ( PEG ) - 600 diethylester using Novozym - 435 ( Candida antarctica lipase ) as a biocatalyst , following a well - established biocatalytic route .
 Chemical: 2 - azido - 1 , 3 - propanediol; Chemical: azido glycerol; Chemical: polyethylene glycol; Chemical: PEG; Chemical: diethylester
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: 2 - azido - 1 , 3 - propanediol, azido glycerol, polyethylene glycol, PEG, diethylester 
Answer:
 Chemical: 2 - azido - 1 , 3 - propanediol; Chemical: azido glycerol; Chemical: polyethylene glycol; Chemical: PEG; Chemical: diethylester