When a six-membered ring is fused to a five-membered ring with a nitrogen, it is called indole. The name of the molecule of interest is Sertindole. Urea has a structure similar to a portion of your molecule, and it is a major component of urine. I am not sure how to give you a hint regarding protonation, off the top of my head. Maybe you can look at a table of pKa values to get an idea. Some functional groups can gain or lose a proton near physiological pH, but others cannot.