Using CC1(C)OB(c2coc(-c3cccnc3)c2)OC1(C)C, Brc1cccc(-c2ncccn2)n1 to produce c1cnc(-c2cccc(-c3coc(-c4cccnc4)c3)n2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.