Using CC(C)(C)N, O=C(O)CC[C@@H](NC(=O)OCc1ccccc1)C(=O)OCc1ccccc1 to produce CC(C)(C)NC(=O)CC[C@@H](NC(=O)OCc1ccccc1)C(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.