Using O=c1ccc(-c2c(-c3ccccc3)nn3ccccc23)nn1C1CCC2(CC1)OCCO2 to produce O=C1CCC(n2nc(-c3c(-c4ccccc4)nn4ccccc34)ccc2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.