Using COc1cc(Br)ccc1-c1nc2c(c(C3CCCCC3)nn2C)c(=O)[nH]1, O=C=O to produce COc1cc(C(=O)O)ccc1-c1nc2c(c(C3CCCCC3)nn2C)c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.