Using CC(C)(CO)[C@@H](O)C(=O)NCCC(=O)[O-], NCCSSCCN to produce CC(C)(CO)[C@@H](O)C(=O)NCCC(=O)NCCSSCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.