Using CC(=O)OC(C)=O, COC(=O)c1ccc(-c2ccccc2)cc1NC(=O)c1ccc(OC2CCNCC2)cc1O to produce COC(=O)c1ccc(-c2ccccc2)cc1NC(=O)c1ccc(OC2CCN(C(C)=O)CC2)cc1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.