Using COc1ccc(CN2C(=O)C(C)(C)c3cc(C)ccc32)cc1, O=C([O-])[O-] to produce Cc1cc2c(cc1O)NC(=O)C2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.