label: 2-butyl-3,6,7,8,9,11-hexahydro-6,9-dimethyl-3-((2'-(2H-tetrazol-5-yl)(1,1'-biphenyl)-4-yl)methyl)-6,9-ethano-4H-imidazo(4,5-d)-pyridazino(1,2-a)pyridazin-4-one
label_lc: 2-butyl-3,6,7,8,9,11-hexahydro-6,9-dimethyl-3-((2'-(2h-tetrazol-5-yl)(1,1'-biphenyl)-4-yl)methyl)-6,9-ethano-4h-imidazo(4,5-d)-pyridazino(1,2-a)pyridazin-4-one