Using CC(C)(C)OC(=O)N1CCN(CCO)CC1, COC(=O)c1ccc(OC)cc1O to produce COC(=O)c1ccc(OC)cc1OCCN1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.