5,6-二(4-氯苯基)-3-甲硫基-1,2,4-三嗪

5,6-bis(4-chlorophenyl)-2,3-dihydropyrazine

2,3-bis(4-chlorophenyl)pyrazine

1,2-双(4-氯苯基)-2-羟基乙酮

triphenylmethyl radical