2-amino-9-(4-hydroxybutyl)-1,9-dihydro-6H-purin-6-one 6H-purin-6-one, 2-amino-1,9-dihydro-9-(4-hydroxybutyl)- InChI=1/C9H13N5O2/c10-9-12-7-6(8(16)13-9)11-5-14(7)3-1-2-4-15/h5,15H,1-4H2,(H3,10,12,13,16