23782
These compounds were characterised on the basis of their spectral data , mainly one - dimension ( 1D ; ( 1 ) H , ( 13 ) C , APT ) and two - dimension ( 2D ; ( 1 ) H - ( 1 ) H - COSY , HMQC and HMBC ) nuclear magnetic resonance ( NMR ) and HR - ESI - MS , and comparison with values in the literature .
 Chemical: ( 1 ) H; Chemical: ( 13 ) C; Chemical: ( 1 ) H; 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: ( 1 ) H; Chemical: ( 13 ) C; Chemical: ( 1 ) H; Chemical: ( 1 ) H