8510
Functionalization of the branched PEG with HPA at varying degrees of substitution was confirmed via attenuated total reflectance Fourier transform infrared spectroscopy ( ATR - FTIR ) and ( 1 ) H NMR .
 Chemical: PEG; Chemical: HPA; Chemical: ( 1 ) H
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: PEG; Chemical: HPA; Chemical: ( 1 ) H