2-methyl-7-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-2,3-dihydro-1-benzofuran-5-sulfonyl chloride 5-benzofuransulfonyl chloride, 7-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-2,3-dihydro-2-methyl- InChI=1/C18H19ClN4O4S/c1-4-5-13-14-15(23(3)22-13)18(24)21-17(20-14)12-8-11(28(19,25)26)7-10-6-9(2)27-16(10)12/h7-9H,4-6H2,1-3H3,(H,20,21,24