Using COC(=O)[C@H](Cc1csc(N)n1)NC(=O)[C@H](Cc1ccccc1)NS(=O)(=O)N1CCOCC1 to produce Nc1nc(C[C@H](NC(=O)[C@H](Cc2ccccc2)NS(=O)(=O)N2CCOCC2)C(=O)O)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.