Using CC(C)(C)CC=O, N[C@@H](CC(=O)O)C(=O)O to produce CC(C)(C)CCN(CCC(C)(C)C)[C@@H](CC(=O)O)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.