Using CCOC(=O)[C@@H]1C[C@@H](O)CN1, CC(=O)SC[C@H]1CCCCCC[C@H](C(=O)O)NC1=O to produce CCOC(=O)[C@@H]1C[C@@H](O)CN1C(=O)[C@H]1CCCCCC[C@H](CSC(C)=O)C(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.