Using [Li]C, CCCCCCCn1c(=O)c(C(=O)OCC)c(OC)c2ccccc21 to produce CCCCCCCn1c(=O)c(C(C)=O)c(OC)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.