(2S)-2-[(2R,4S,5S)-3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-5-(2-{[(R)-hydroxy(phosphonooxy)phosphoryl]oxy}ethyl)-4-methyl-1,3-thiazolidin-2-yl]-2-hydroxypropanoic acid
(2s)-2-[(2r,4s,5s)-3-[(4-amino-2-methylpyrimidin-5-yl)methyl]-5-(2-{[(r)-hydroxy(phosphonooxy)phosphoryl]oxy}ethyl)-4-methyl-1,3-thiazolidin-2-yl]-2-hydroxypropanoic acid