Using C[C@@H](Oc1nc(-c2ccc3c(c2)NC(=O)C32OCCO2)cc2ncn(C3CC3)c12)[C@H]1CNC(=O)C1 to produce C[C@@H](Oc1nc(-c2ccc3c(c2)NC(=O)C3=O)cc2ncn(C3CC3)c12)[C@H]1CNC(=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.