Using COS(=O)(=O)OC, c1ccc2[nH]c(-c3nc4ccccc4[nH]3)nc2c1 to produce Cn1c(-c2nc3ccccc3[nH]2)nc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.