Using c1ccncc1, CCOC(=O)CC1(OS(C)(=O)=O)CCN(CC2CN(c3ccc(C#N)cc3)C(=O)O2)CC1 to produce CCOC(=O)CC1(N)CCN(CC2CN(c3ccc(C#N)cc3)C(=O)O2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.