26289
Computational chemistry indicates that three of these water molecules mediate an extensive hydrogen - bonding network between thapsigargin and the backbone of SERCA .
 Chemical: hydrogen; Chemical: thapsigargin
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: hydrogen; Chemical: thapsigargin