ethyl N-(5-cyano-1,4-dihydro-3-methyl-1,4-diphenylpyrano<2,3-c>pyrazol-6-yl)methanimidate
6-amino-1,4-dihydro-3-methyl-1,4-diphenylpyrano[2,3-c]pyrazole-5-carbonitrile
6-amino-1,4,5,6-tetrahydro-5-imino-3-methyl-1,4-diphenylpyrazolo<4',3':5,6>pyrano<2,3-d>pyrimidine
oxalic acid diethyl ester