13525
Efficient two - electron reduction of dioxygen to hydrogen peroxide with one - electron reductants with a small overpotential catalyzed by a cobalt chlorin complex .
 Chemical: dioxygen; Chemical: hydrogen peroxide; Chemical: cobalt chlorin
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: dioxygen; Chemical: hydrogen peroxide; Chemical: cobalt chlorin