2-methoxy-5-[(Z)-2-(3,4,5-trimethoxyphenyl)ethenyl]phenol 2-methoxy-5-[(Z)-2-(3,4,5-trimethoxyphenyl)vinyl]phenol ST-1986 NSC613729 Phenol, 2-methoxy-5-[2-(3,4,5-trimethoxyphenyl)ethenyl]-