N,N'-(6,6''-(ethane-1,2-diylbis(oxy))bis(5-(2-methoxyphenoxy)-[2,2'-bipyrimidine]-6,4-diyl))bis(4-(tert-butyl)benzenesulfonamide); N,N'-[1,2-ethanediylbis[oxy[5-(2-methoxyphenoxy)[2,2'-bipyrimidine]-6,4-diyl]]]bis[4-(1,1-dimethylethyl)benzenesulfonamide]; Bosentan impurity C; Bosentan USP Related Compound C
