Using CCN=C=NCCCN(C)C, Cc1cc(C(CC2CCCC2)c2ccc(S(C)(=O)=O)cc2)[nH]c1C(=O)O to produce Cc1cc(C(CC2CCCC2)c2ccc(S(C)(=O)=O)cc2)[nH]c1C(N)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.