2-{4-[(2,4-diamino-pteridin-6-ylmethyl)-methyl-amino]-benzoylamino}-4-(5-{2-[3,4,5-triacetoxy-6-(4,5,6-triacetoxy-2-acetoxymethyl-tetrahydro-pyran-3-yloxy)-tetrahydro-pyran-2-ylmethylsulfanyl]-ethylcarbamoyl}-pentylcarbamoyl)-butyric acid methyl ester