9873
Neu2000 [ 2 - hydroxy - 5 - ( 2 , 3 , 5 , 6 - tetrafluoro - 4 trifluoromethylbenzylamino ) benzoic acid ] is a dual - acting neuroprotective agent that functions both as a noncompetitive N - methyl - d - aspartate ( NMDA ) receptor antagonist and a free radical scavenger .
 Chemical: Neu2000; Chemical: 2 - hydroxy - 5 - ( 2 , 3 , 5 , 6 - tetrafluoro - 4 trifluoromethylbenzylamino ) benzoic acid; Chemical: N - methyl - d - aspartate
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: Neu2000; Chemical: 2 - hydroxy - 5 - ( 2 , 3 , 5 , 6 - tetrafluoro - 4 trifluoromethylbenzylamino ) benzoic acid; Chemical: N - methyl - d - aspartate