Using COC(=O)COc1ccc(-c2ccc3c(c2)c2c(n3Cc3ccccc3)CCCC2)cc1 to produce O=C(O)COc1ccc(-c2ccc3c(c2)c2c(n3Cc3ccccc3)CCCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.