3-[4-[7-[(benzyl-methyl-amino)methyl]-2-[(2,6-difluorophenyl)methyl]-3 ,5-dioxo-4-phenyl-9-thia-2,4-diazabicyclo[4.3.0]nona-7,10-dien-8-yl]ph enyl]-1-methoxy-urea