Using COC(=O)c1ccc(O[C@H]2CCN(C3CCN(C(=O)OC(C)(C)C)CC3)C2=O)cn1 to produce COC(=O)c1ccc(O[C@H]2CCN(C3CCNCC3)C2=O)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.