4-(N-(2-hydroxy-2-methylpropyl)-ethanolamino)-2,7-bis(2,6-dimethylmorpholino)-6-(4-azidophenyl)pteridine C??? ??, ??, ??

4-(N-(2-hydroxy-2-methylpropyl)-ethanolamino)-2,7-bis(2,6-dimethylmorpholino)-6-(4-azidophenyl)pteridine ?? ?? ? ???

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4-(N-(2-hydroxy-2-methylpropyl)-ethanolamino)-2,7-bis(2,6-dimethylmorpholino)-6-(4-azidophenyl)pteridine ?? ??