Using O=C(Oc1ccccc1)N(CC1CN(Cc2ccccc2)CCO1)c1ccccc1 to produce O=C(Oc1ccccc1)N(CC1CNCCO1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.