What is the molecular formula of the molecule benzyl (4S,5S)-2,2-dimethyl-5-[(2S)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropyl]-4-[[4-(5-methylpyridin-2-yl)phenyl]methyl]-1,3-oxazolidine-3-carboxylate ?