Using O=C1[C@H]2NCC[C@H]2N1S(=O)(=O)O, NCCNC(=O)Nc1ccc(NC(=O)ON2C(=O)CCC2=O)cc1 to produce NCCNC(=O)Nc1ccc(NC(=O)N2CC[C@@H]3[C@H]2C(=O)N3S(=O)(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.