CCCc1c2c(c(=O)[nH]c(n2)c3cc(ccc3OCC)S(=O)(=O)N4C=CN(C=C4)C)n(n1)C VIA 5-[2-ethoxy-5-(4-methylpyrazin-1-yl)sulfonyl-phenyl]-1-methyl-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-7-one