Synonyms: gamma-Truxilline;epsilon-Truxilline;113350-55-3;113350-56-4;1,3-Cyclobutanedicarboxylic acid, 2,4-diphenyl-, bis((1R,2R,3S,5S)-2-(methoxycarbonyl)-8-methyl-8-azabicyclo(3.2.1)oct-3-yl) ester, (1alpha,2alpha,3alpha,4beta)-;1,3-Cyclobutanedicarboxylic acid, 2,4-diphenyl-, bis((1R,2R,3S,5S)-2-(methoxycarbonyl)-8-methyl-8-azabicyclo(3.2.1)oct-3-yl) ester, (1alpha,2beta,3alpha,4beta)-;1,3-Cyclobutanedicarboxylic acid, 2,4-diphenyl-, bis(2-(methoxycarbonyl)-8-methyl-8-azabicyclo(3.2.1)oct-3-yl) ester, stereoisomer