Using O=C1C2CN(Cc3ccccc3)CC1CN(Cc1ccccc1)C2, OCCO to produce c1ccc(CN2CC3CN(Cc4ccccc4)C4OCCOC4(C3)C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.