Using CC(C)(C)OC(=O)N1CCC(O)CC1, CCOC(=O)c1ccc(O)cc1 to produce CCOC(=O)c1ccc(OC2CCN(C(=O)OC(C)(C)C)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.