Using O=c1ccc2c3c1cccc3c1cccc3c(=O)c4ccccc4c2c31 to produce c1ccc2c(c1)cc1cccc3c4cccc5cccc(c54)c2c13, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.