Using CCC(CC)c1cc(C)nn2c(I)c(C)nc12, Cc1cnn(C)c1 to produce CCC(CC)c1cc(C)nn2c(-c3c(C)cnn3C)c(C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.