Using O=c1cc(CO)n(-c2cccc(-c3ccccc3)c2)cc1OCc1ccccc1 to produce O=Cc1cc(=O)c(OCc2ccccc2)cn1-c1cccc(-c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.