Using COC1(c2ccc(Cl)cc2)CCN(c2ccc(N3CCN(C(=O)OC(C)(C)C)CC3)cc2)CC1 to produce COC1(c2ccc(Cl)cc2)CCN(c2ccc(N3CCNCC3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.