442865-12-5

2-((7-(2-ethoxyethyl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)thio)acetic acid {[7-(2-ethoxyethyl)-6-hydroxy-3-methyl-2-oxo-3,7-dihydro-2H-purin-8-yl]sulfanyl}acetic acid Acetic acid, 2-[[7-(2-ethoxyethyl)-2,3,6,7-tetrahydro-3-methyl-2,6-dioxo-1H-purin-8-yl]thio]-