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