Using CC(=O)OC(C)=O, CC(C)(C)OC(=O)c1c(OCCO)noc1N to produce CC(=O)OCCOc1noc(N)c1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.