3--1--2--5-

3-methyl-1-phenyl-2-pyrazolin-5-one，。，，。。，3-methyl-1-phenyl-2-pyrazolin-5-one，。，，，。，。，。，，、。，3-methyl-1-phenyl-2-pyrazolin-5-one，，。、。，3-methyl-1-phenyl-2-pyrazolin-5-one，。、，。，3-methyl-1-phenyl-2-pyrazolin-5-one，。，，。，，。