Using CI, CCOC(=O)Cc1nc(N)c(C#N)c(-c2ccc3c(c2)OCO3)c1C#N to produce CCOC(=O)C(C)c1nc(N)c(C#N)c(-c2ccc3c(c2)OCO3)c1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.