Using OC1(c2cn(C(c3ccccc3)(c3ccccc3)c3ccccc3)cn2)CC(Cc2ccccc2)c2ccccc21 to produce C1=C(c2c[nH]cn2)c2ccccc2C1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.