4H-1,3-Dioxino[4',5':5,6]pyrano[3,4-d]imidazol-6a(6H)-ol, 8-amino-4a,7,9a,9b-tetrahydro-6-methoxy-7-nitro-2-phenyl-, methanesulfonate (ester) AIDS-044006 AIDS044006 NSC210828