Using c1ccc(-c2cc3c(-c4cn[nH]c4)nccc3nc2-c2ccc(C3OCCO3)cc2)cc1 to produce O=Cc1ccc(-c2nc3ccnc(-c4cn[nH]c4)c3cc2-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.