1 HK4 4-[(6,7-dimethoxy-2,4-dihydroindeno[1,2-C]pyrazol-3-yl)ethynyl]-2-methoxyphenol 1.000 2 1HK 4-[2-(2,4-dihydroindeno[1,2-C]pyrazol-3-yl)ethyl]-2-methoxyphenol 0.852