15809
The c ( RGDfK ) on the surface of the micelle was confirmed by ( 1 ) H NMR analysis and cell affinity with human glioblastoma - astrocytoma cells ( U87MG ) .
 Chemical: ( 1 ) H
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: ( 1 ) H 
Answer:
 Chemical: ( 1 ) H