2,5,6,8-Tetramethyl[1,3]oxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidine-4,7,9(5H,6H,8H)-trione

2,5,6,8-tetramethyl-4,5,6,7,8,9-hexahydropyrimido[5′,4′:5,6]pyrido[3,4-d][1,3]oxazole-4,7,9-trione

2,5,6,8-Tetramethyl[1,3]oxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidin-4,7,9(5H,6H,8H)-trion

2,5,6,8-Tetramethyl[1,3]oxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidine-4,7,9(5H,6H,8H)-trione

2,5,6,8-Tétraméthyl[1,3]oxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidine-4,7,9(5H,6H,8H)-trione

Oxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidine-4,7,9(5H,6H,8H)-trione, 2,5,6,8-tetramethyl-

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