Staying with chemical names, we meet the king of long words- 1,913 letters long! (Some say it's 1,909 letters long, but I don't have the patience to count.) methionylglutaminylarginyltyrosylglutamylserylleucylphenyl- alanylalanylglutaminylleucyllysylglutamylarginyllysyglutamyl- gycylalanylphenylalanylvalylprolylphenylalanylvalylthreonyl- leucylglycylaspartylprolylglycyllisoleucylglutamylglutaminyl- serylleucyllysylisoleucylaspartylthreonylleucylisoleucyl- glutamylalanylglycylalanylaspartylalanylleucylglutamylleucyl- glycylisoleucylprolylphenylalanylserylaspartylprolylleucyl- alanylaspartylglycylprolylthreonylisoleucylglutaminylasparaginyl- alanylthreonylleucylarginylalanylphenylalanylalanylalanyl- glycylvalylthreonylprolylalanylglutaminylcysteinylphenylalanyl- glutamylmethionylleucylalanylleucylisoleucylarginylglutaminyl- lysylhistidylprolylthreonylisoleucylprolylisoleucylglycylleucyl- leucylmethionyltyrosylalanylasparaginylleucylvalylphenylalanyl- asparaginyllysylglycylisoleucylaspartylglutamylphenylalanyl- tyrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalyl- aspartylsrylvalylleucylvalylalanylaspartylvalylprolylvalyl- glutaminylglutamylserylalanylprolylphenylalanylarginylglutaminyl- alanylalanylleucylarginylhistidylasparaginylvalylalanyl- prolylisoleucylphenylalanylisoleucylcysteinylprolylprolylaspartyl- alanylaspartylaspartylaspartylleucylleucylarginylglutaminyl- isoleucylalanylseryltyrosylglycylarginylglycyltyrosylthreonyl- tyrosylleucylleucylserylarginylalanylglycylvalylthreonylglycyl- alanylglutamylasparaginylarginylalanylalanylleucylleucyllysyl- glutamyltyrosylasparaginylalanylalanylprolylprolylleucylglutaminyl- glycylphenylalanylglysylisoleucylserylalanylprolylaspartylglutaminyl- valyllysylalanylalanylisoleucylaspartylalanylglycylalanylalanyl- glycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylisoleucyl- isoleucylglutamylglutaminylhistidylasparaginylisoleucylglutamyl- prolylglutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenyl- alanylvalylglutaminylprolylmethionyllysylalanylalanylthreonylarginy- lserine Quite overwhelming, isn't it? It is the term for the formula C1289H2051N343O375S. What type of a compound is this chemical?