Using O=C1NCCc2[nH]c(-c3cccc4ccc(Oc5ccccc5)nc34)cc21 to produce O=c1[nH]ccc2[nH]c(-c3cccc4ccc(Oc5ccccc5)nc34)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.