Using CCOc1cc(C(CC(C)O)N2C(=O)c3cccc(N)c3C2=O)ccc1OC to produce CCOc1cc(C(CC(C)=O)N2C(=O)c3cccc(N)c3C2=O)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.