Using C=C(C)CC1(C(=O)OCC)CCN(C(=O)OC(C)(C)C)CC1 to produce CCOC(=O)C1(CC(C)C)CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.