30158
Based on IR , HR - ESI - MS , and 1D as well as 2D NMR ( ( 1 ) H - ( 1 ) H COSY , NOESY , HSQC , and HMBC ) spectral data , the chemical structure of the new saponin was elucidated as 3 beta , 12 beta , 20S , 26 - tetrahydroxydammar - 24E - en - 6 alpha - O - beta - d - glucopyranosyl - ( 1 --> 2 ) - O - beta - d - glucopyranoside .
 ( 1 ) H, ( 1 ) H, saponin, 3 beta , 12 beta , 20S , 26 - tetrahydroxydammar - 24E - en - 6 alpha - O - beta - d - glucopyranosyl - ( 1 --> 2 ) - O - beta - d - glucopyranoside
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ( 1 ) H, ( 1 ) H, saponin, 3 beta , 12 beta , 20S , 26 - tetrahydroxydammar - 24E - en - 6 alpha - O - beta - d - glucopyranosyl - ( 1 --> 2 ) - O - beta - d - glucopyranoside