Using CCOC(=O)CBr, Cc1cn([C@H]2C[C@H](N=[N+]=[N-])[C@@H](CO)O2)c(=O)[nH]c1=O to produce CCOC(=O)n1c(=O)c(C)cn([C@H]2C[C@H](N=[N+]=[N-])[C@@H](CO)O2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.