Using CCOC(=O)c1cnc2c3cc(NC(=O)C(C)(C)C)ccc3c(C)cn2c1=O to produce Cc1cn2c(=O)c(C(=O)O)cnc2c2cc(NC(=O)C(C)(C)C)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.