Using CCOC(=O)C1=C(N)CCC2(CC2)C1, CC1(C)COC2(CC[C@H](C(=O)O)C2)OC1 to produce CCOC(=O)C1=C(NC(=O)[C@H]2CCC3(C2)OCC(C)(C)CO3)CCC2(CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.