Using Cc1cc2c(OCC(C)C)cc(C(=O)O)cc2o1, COC(=O)c1ccc(N)nc1 to produce COC(=O)c1ccc(NC(=O)c2cc(OCC(C)C)c3cc(C)oc3c2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.