Using COc1ccc(C(=O)CN2CCN(c3cccccc3=O)CC2)cc1OC to produce COc1ccc(C(O)CN2CCN(c3cccccc3=O)CC2)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.