26241
Designing , structural elucidation , comparison of DNA binding , cleavage , radical scavenging activity and anticancer activity of copper ( I ) complex with 5 - dimethyl - 2 - phenyl - 4 - [ ( pyridin - 2 - ylmethylene ) - amino ] - 1 , 2 - dihydro - pyrazol - 3 - one Schiff base ligand .
 Chemical: copper ( I ); Chemical: 5 - dimethyl - 2 - phenyl - 4 - [ ( pyridin - 2 - ylmethylene ) - amino ] - 1 , 2 - dihydro - pyrazol - 3 - one; Chemical: Schiff base
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: copper ( I ); Chemical: 5 - dimethyl - 2 - phenyl - 4 - [ ( pyridin - 2 - ylmethylene ) - amino ] - 1 , 2 - dihydro - pyrazol - 3 - one; Chemical: Schiff base