Using COC(=O)CCC(N)=O, Nc1nc2cc(OS(=O)(=O)c3ccc(-n4ccnc4)cc3)ccc2[nH]1 to produce COC(=O)CCC(=O)Nc1nc2cc(OS(=O)(=O)c3ccc(-n4ccnc4)cc3)ccc2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.