2-Imidazolidinone. 1-[4-[4-[4-[[(2S.4R)-4-(2.4-difluorophenyl)-4-(1H-1.2.4-triazol-1-ylmethyl)-1.3-dioxolan-2-yl]methoxy]phenyl]-1-piperazinyl]phenyl]-3-(1-methylethyl)-