Using CCOC(=O)c1c(Cn2c(=O)n(C3CC3)c3ccncc32)n(CCC(C)C)c2ccccc12 to produce CC(C)CCn1c(Cn2c(=O)n(C3CC3)c3ccncc32)c(C(=O)O)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.