2552
GS967 prevented and reversed proarrhythmic effects ( afterdepolarizations and torsades de pointes ) of the late I ( Na ) enhancer ATX - II and the I ( Kr ) inhibitor E - 4031 in isolated ventricular myocytes and hearts .
 Chemical: GS967; Chemical: Na; Chemical: Kr; Chemical: E - 4031
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: GS967; Chemical: Na; Chemical: Kr; Chemical: E - 4031