Synonyms: 1H-Pyrrole-2-carboxylicacid,dodecahydro-9,10-dihydroxy-11-oxo-7,14-methano-2H,6H-dipyrido[1,2-a:1',2'-e][1,5]diazocin-2-ylester, [2S-(2a,7b,7ab,9a,10b,14b,14aa)]-; 7,14-Methano-2H,6H-dipyrido[1,2-a:1',2'-e][1,5]diazocine,1H-pyrrole-2-carboxylic acid deriv.; Calpaurine