Using CCOC(=O)CCC(C(=O)OCC)C(=O)c1cccc(OCc2c(C)cccc2C)c1 to produce Cc1cccc(C)c1COc1cccc(C(=O)CCCC(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.