Using CCOC(=O)c1cnc(N2CCC[C@H]2C(=O)OC(C)(C)C)nc1 to produce CCOC(=O)c1cnc(N2CCC[C@H]2C(=O)O)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.