Using CCOC(=O)c1cnc(S(C)(=O)=O)nc1, O=S(=O)(c1ccc2ccccc2c1)N1CCNCC1 to produce CCOC(=O)c1cnc(N2CCN(S(=O)(=O)c3ccc4ccccc4c3)CC2)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.