Standard InChI: InChI=1S/C32H34N2O7/c1-37-26-16-21(17-27(38-2)30(26)39-3)28-24-11-10-23(41-19-20-8-6-5-7-9-20)18-25(24)31(33-29(28)32(36)40-4)34-14-12-22(35)13-15-34/h5-11,16-18,22,35H,12-15,19H2,1-4H3
1.Sakamoto T, Koga Y, Hikota M, Matsuki K, Murakami M, Kikkawa K, Fujishige K, Kotera J, Omori K, Morimoto H, Yamada K.. (2014) Design and synthesis of novel 5-(3,4,5-trimethoxybenzoyl)-4-aminopyrimidine derivatives as potent and selective phosphodiesterase 5 inhibitors: scaffold hopping using a pseudo-ring by intramolecular hydrogen bond formation., 24 (22):[PMID:25442307][10.1016/j.bmcl.2014.09.082]