"Pyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylic acid,6,7-dihydro-,5-(1,1-dimethylethyl)2-ethyl ester"
"Pyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylic acid,6,7-dihydro-,5-(1,1-dimethylethyl)2-ethyl ester"
"Pyrazolo[1,5-a]pyrazine-2,5(4H)-dicarboxylic acid,6,7-dihydro-,5-(1,1-dimethylethyl)2-ethyl ester"