# What is the structural formula for ibuprofen?

This is because it has a methylpropyl group (${\text{CH"_3"CH"("CH"_3)"CH}}_{2}$) bonded to a phenyl group (here ${\text{C"_6"H}}_{4}$) bonded to a propanoic acid group ($\text{CH"_3"CH""COOH}$)