3-[2-(2-Benzyloxycarbonylamino-3-methoxycarbonyl-propanoylamino)-3-methoxycarbonyl-propanoylamino]-N-{1-[1-(1-hydrazinocarbonyl-2-methoxycarbonyl-ethylcarbamoyl)-2-methoxycarbonyl-ethylcarbamoyl]-2-methoxycarbonyl-ethyl}-succinamic acid methyl ester AIDS-030418 AIDS030418 NSC668895