antimony: 1H-pyrimidine-2,4-dione: dihydrate

2,4,10,12-Tetraoxa-6,16,17,18-tetraaza-3,11-distibatricyclo(11.3.1.1(sup 5,9))octadeca-1(17),5,7,9(18),13,15-hexaene, 3,11-dihydroxy-