NC56583
Thymidine, 5′-S-[2-[(2-carboxyethyl)amino]-2-oxoethyl]-3′-de(phosphinicooxy)-5′-thiothymidylylimino(1-oxo-1,2-ethanediyl)-(3′→5′)-3′-de(phosphinicooxy)-5′-thiothymidylylimino(1-oxo-1,2-ethanediyl)-(3′→5′)-3′-de(phosphinicooxy)-5′-thiothymidylylimino(1-oxo-1,2-ethanediyl)-(3′→5′)-3′-de(phosphinicooxy...