Using CCCCc1nc(=O)c2cc(C=O)ccc2[nH]1, CN1CCCC1=O to produce CCCCc1nc(=O)c2cc(C(O)C3CCN(C)C3=O)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.