Using COc1cc(N)cc(OC)c1OC, O=C(O)CCCN1CCN2CCCCC2C1 to produce COc1cc(NC(=O)CCCN2CCN3CCCCC3C2)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.