Using C[C@@H](C(=O)N[C@@H]1C(=O)N(Cc2c(C3CC3)cnc3ccccc23)c2ccccc2N(C(=O)C2CCOCC2)[C@H]1C)N(C)C(=O)OC(C)(C)C to produce CN[C@@H](C)C(=O)N[C@@H]1C(=O)N(Cc2c(C3CC3)cnc3ccccc23)c2ccccc2N(C(=O)C2CCOCC2)[C@H]1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.