What is the name of H4C?

What is the name of H4C? Chemical Component Summary Name 4-(2-chlorophenyl)-2-ethyl-9-methyl-6,8-dihydrothieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-10-ium Synonyms 7-(2-chlorophenyl)-4-ethyl-13-methyl-3-thia-1,8,11,12-tetraazatricyclo trideca-2(6),4,7,10,12-pentaene Identifiers n/a Formula C17 H16 Cl N4 S What is the “What is the name of H4C?”