1456
In addition , although PCP and SDZ 220 , 581 induced similar deficits in a discrimination and reversal learning task , LSN2463359 was again only able to reverse the deficit induced by SDZ 220 , 581 .
 Chemical: PCP; Chemical: SDZ 220 , 581; Chemical: LSN2463359; Chemical: SDZ 220 , 581
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: PCP; Chemical: SDZ 220 , 581; Chemical: LSN2463359; Chemical: SDZ 220 , 581