Using CCN=C=NCCCN(C)C, COCC(C)Oc1cc(Oc2ccc(S(C)(=O)=O)cc2)cc2cc(C(=O)O)[nH]c12 to produce COCC(C)Oc1cc(Oc2ccc(S(C)(=O)=O)cc2)cc2cc(C(N)=O)[nH]c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.