Using CCOC(=O)/C=C/c1c(-c2ccccc2)c2cc(C)c(C)cc2c(=O)n1C to produce CCOC(=O)CCc1c(-c2ccccc2)c2cc(C)c(C)cc2c(=O)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.