Using CCCc1ccc(CNC(=O)[C@H]2CN(C(=O)OC(C)(C)C)CCN2C(=O)OCc2ccccc2)cc1 to produce CCCc1ccc(CNC(=O)[C@H]2CNCCN2C(=O)OCc2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.