1,6-Methano-2-benzazocine, 1,2,3,4,5,6-hexahydro-8-methoxy-2-(3-methyl-2-butenyl)-, oxalate 2'-Methoxy-2-(3-methyl-2-butenyl)-1,2,3,4,5,6-hexahydro-1,6-methano-2-benzazocine oxalate 76777-19-0 8-Methoxy-2-(3-methyl-2-butenyl)-1,2,3,4,5,6-hexahydro-1,6-methano-2-benzazocine oxalate