Using CN(C(=O)OC(C)(C)C)c1ccc(C(=O)N2CCC(N3C(=O)CCc4ccccc43)CC2)cc1 to produce CNc1ccc(C(=O)N2CCC(N3C(=O)CCc4ccccc43)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.