Using Clc1nccc2c1c(I)nn2C(c1ccccc1)(c1ccccc1)c1ccccc1, CO to produce COc1nccc2c1c(I)nn2C(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.