Using CC[C@@H](C=O)NC(=O)OC(C)(C)C, c1cnc2ncoc2c1 to produce CC[C@H](NC(=O)OC(C)(C)C)C(O)c1nc2ncccc2o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.