Here's what rhymes with oligopyrrole.
role roll whole soul coal goal hole pole sole bowl fol mole poll toll knoll shoal dole droll foal bole boll thole troll vole bedroll kohl tole prole dolour patrol stole parole scroll stroll enroll unroll oriole rissole skoal control extol arteriole cajole petiole camisole cubbyhole maypole extoll innersole glycerol systole casserole vacuole condole pigeonhole beanpole quadrupole buttonhole decontrol profiterole