2-?Pyrrolidinepropanoic acid, 1-?[(3R,?4S,?5S)?-?4-?[[(1,?1-?dimethylethoxy)?carbonyl]?methylamino]?-?3-?methoxy-?5-?methyl-?1-?oxoheptyl]?-?β-?methoxy-?α-?methyl-?, phenylmethyl ester, (αR,?βR,?2S)?-
2-?Pyrrolidinepropanoic acid, 1-?[(3R,?4S,?5S)?-?4-?[[(1,?1-?dimethylethoxy)?carbonyl]?methylamino]?-?3-?methoxy-?5-?methyl-?1-?oxoheptyl]?-?β-?methoxy-?α-?methyl-?, phenylmethyl ester, (αR,?βR,?2S)?-