Using CCC(CC)(c1ccc(OCC(=O)C(C)(C)C)c(C)c1)c1ccc2oc(C(=O)O)c(C)c2c1, CNC to produce CCC(CC)(c1ccc(OCC(=O)C(C)(C)C)c(C)c1)c1ccc2oc(C(=O)N(C)C)c(C)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.