Using CN(C)[C@@H]1CCN(Cc2ccc(C(=O)O)cc2)C1, CC(C)(C)OC(=O)Nc1ccc(-c2cccs2)cc1N to produce CN(C)[C@@H]1CCN(Cc2ccc(C(=O)Nc3cc(-c4cccs4)ccc3NC(=O)OC(C)(C)C)cc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.