Using CC(=O)NCCNc1nc(-c2ccccc2)nc(NCCN)c1C, O=C(O)c1ccccc1 to produce CC(=O)NCCNc1nc(-c2ccccc2)nc(NCCNC(=O)c2ccccc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.