9043
The synthetic sample showed ( 1 ) H and ( 13 ) C NMR entirely different from those in the literature , revealing that the initially assigned structure was incorrect .
 Chemical: ( 1 ) H; Chemical: ( 13 ) C
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: ( 1 ) H; Chemical: ( 13 ) C