Using CC(=O)OCCN1C(=O)C2(CCNCC2)c2cc(CC3CCCCCCC3)ccc21 to produce O=C1N(CCO)c2ccc(CC3CCCCCCC3)cc2C12CCNCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.