10826
The structures of the regioisomers 6 and 7 were determined by 2D ( 1 ) H - ( 1 ) H COSY , ( 1 ) H - ( 13 ) C HSQC and ( 1 ) H - ( 13 ) C HMBC experiments .
 Chemical: ( 1 ) H; Chemical: ( 1 ) H; Chemical: ( 1 ) H; Chemical: ( 13 ) C; 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: ( 1 ) H; Chemical: ( 1 ) H; Chemical: ( 13 ) C; Chemical: ( 1 ) H; Chemical: ( 13 ) C