Using CCOC(CC)(OCC)OCC, CCOC(=O)C1(CNc2c(N)cnc3ccccc23)CCC1 to produce CCOC(=O)C1(Cn2c(CC)nc3cnc4ccccc4c32)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.