Using OCc1cc2cc(N(Cc3ccccc3)Cc3ccccc3)ncc2[nH]1 to produce O=Cc1cc2cc(N(Cc3ccccc3)Cc3ccccc3)ncc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.