Using CC(=O)OCCOCOC(C)=O, Nc1nc2nc[nH]c2c(=O)[nH]1 to produce CC(=O)OCCOCn1cnc2c(=O)[nH]c(N)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.