8894
Despite that separately molecule and nanoparticle are achiral and consequently optically inactive , the Ag ( 55 ) - SCH ( 3 ) compound emerges with a new symmetry , which may be chiral or not depending on the adsorption site and orientation of the molecule .
 Chemical: Ag ( 55 ) - SCH ( 3 )
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: Ag ( 55 ) - SCH ( 3 )