Using O=C(O)CO, CS(=O)(=O)Oc1ccccc1C1CC(c2csc(C3CC[NH2+]CC3)n2)=NO1 to produce CS(=O)(=O)Oc1ccccc1C1CC(c2csc(C3CCN(C(=O)CO)CC3)n2)=NO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.