Human BACE-1 in complex with 6-ethyl-1-methyl-N-((1S)-2-oxo-1-(phenylmethyl)-3-(tetrahydro-2H-pyran-4-ylamino)propyl)-1,3,4,6- tetrahydro(1,2)thiazepino(5,4,3-cd)indole-8-carboxamide 2,2-dioxide