Using CC(=O)OC(C)=O, Nc1ccc(OCC2CCN(CC(O)COc3cccc4c3CCN4C=O)CC2)cc1 to produce CC(=O)Nc1ccc(OCC2CCN(CC(O)COc3cccc4c3CCN4C=O)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.