Guanosine 5'- (trihydrogen diphosphate) P'-D-mannopyranosyl ester disodium salt

O[C@H]1[C@] ([H]) (N2C3=C (N=C2) C (N=C (N) N3) =O) O[C@H] (COP (OP (OC4O[C@H] (CO) [C@@H] (O) [C@H] (O) [C@@H]4O) ([O-]) =O) ([O-]) =O) [C@H]1O.[Na+].[Na+]