Using O=C(O)CC1CCCC1, COc1cc(C(=O)O)ccc1Cc1cn(C(C)=O)c2ccc(N)cc12 to produce COc1cc(C(=O)O)ccc1Cc1cn(C(C)=O)c2ccc(NC(=O)CC3CCCC3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.