Synonyms: 2-Butenoicacid, 2-methyl-4-(2,3,8,8a-tetrahydro-1-methylpyrrolo[2,3-b]indol-3a(1H)-yl)-,2-methyl-4-(2,3,8,8a-tetrahydro-1-methylpyrrolo[2,3-b]indol-3a(1H)-yl)-2-butenylester, [3aR-[3aa[E[E(3aR*,8aR*)]],8aa]]-; 2-Butenoic acid,2-methyl-4-[(3aR,8aR)-2,3,8,8a-tetrahydro-1-methylpyrrolo[2,3-b]indol-3a(1H)-yl]-,(2E)-2-methyl-4-[(3aR,8aR)-2,3,8,8a-tetrahydro-1-methylpyrrolo[2,3-b]indol-3a(1H)-yl]-2-butenylester, (2E)- (9CI); Pyrrolo[2,3-b]indole, 2-butenoic acid deriv.;Pseudophrynamine A