Using COc1ccc([C@@H](C)N2C[C@H](C(=O)O)CC2=O)cc1, CNOC to produce COc1ccc([C@@H](C)N2C[C@H](C(=O)N(C)OC)CC2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.