Using CC(C)C(C(=O)O)c1ccccc1, CC(C)(C)OC(=O)N[C@H]1CC[C@@H]2CNC[C@@H]21 to produce CC(C)C(C(=O)N1C[C@H]2CC[C@H](NC(=O)OC(C)(C)C)[C@H]2C1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.