There are 2 places where hydrogen is bonded to oxygen and 1 place where hydrogen is bonded to a nitrogen. What type of intermolecular forces form when hydrogen is bonded to an extremely electronegative atom?
Carbon and hydrogen have roughly the same electronegativity, so Van Der Waal's forces could form between parts of the molecule too.
The ring has a high electron density due to the double bonds, so interactions could also occur there.