19028
The largest changes in the conductance are observed when the Au - S - C angle and the Au - S - C - C dihedral are simultaneously constrained .
 Au - S - C, Au - S - C - C
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Au - S - C, Au - S - C - C