Using CC1Cc2c(C(C)C3C(=O)OC(C)(C)OC3=O)c(-c3ccccc3)c(-c3ccccc3)n2C1C to produce CCOC(=O)CC(C)c1c(-c2ccccc2)c(-c2ccccc2)n2c1CC(C)C2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.