Using CC(C)(C)OC(=O)COc1ccc(N2CCN(C(=O)OC3CCNCC3)CC2)cc1 to produce O=C(O)COc1ccc(N2CCN(C(=O)OC3CCNCC3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.