Using COc1ccc(CN(CC2(O)CCN(C(=O)OC(C)(C)C)CC2)C(=O)C(Cl)c2ccccc2)cc1 to produce COc1ccc(CN2CC3(CCN(C(=O)OC(C)(C)C)CC3)OC(c3ccccc3)C2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.