Using CCOC(=O)C1CC1c1cc2cc(OCCCNc3ccccn3)ccc2[nH]1, CO to produce O=C(O)C[C@@H]1C[C@H]1c1cc2cc(OCCCNc3ccccn3)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.