Using COc1cccc(CC2CCCC=C2c2nc(-c3ccccc3)c(-c3ccccc3)o2)c1C to produce Cc1c(O)cccc1CC1CCCC=C1c1nc(-c2ccccc2)c(-c2ccccc2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.