Using COc1ccc(-c2ccc([C@H]3CN(C(=O)OC(C)(C)C)CCN3C(=O)OC(C)(C)C)cc2)cc1 to produce COc1ccc(-c2ccc([C@H]3CNCCN3)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.