10497
The drugs clinically used for the treatment of this disease , such as acetylcholinesterase inhibitors ( AChEIs ) and N - methyl - D - aspartate ( NMDA ) receptor antagonist , can only provide a limited therapeutic effect .
 Chemical: N - methyl - D - aspartate; Chemical: NMDA
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: N - methyl - D - aspartate; Chemical: NMDA