Using COc1ccc(CN2CCN(CCCN3CCN(Cc4ccc(OC)cc4)CC3)CC2)cc1 to produce Oc1ccc(CN2CCN(CCCN3CCN(Cc4ccc(O)cc4)CC3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.