Using O=C(O)CC(O)(CC(=O)O)C(=O)O, CC(C)(C)OC(=O)N[C@@]1(C)CCN(C(=O)OCc2ccccc2)C1 to produce CN(C(=O)OC(C)(C)C)[C@@]1(C)CCN(C(=O)OCc2ccccc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.