Using C=C(c1ccccc1)c1nc(OCCC)c2nc(-c3cccc(C)c3)oc2n1 to produce CCCOc1nc(C(C)c2ccccc2)nc2oc(-c3cccc(C)c3)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.