We’re being asked to name the given structure using IUPAC nomenclature.
Recall that IUPAC nomenclature follows this pattern:
Locations – Substituents – Root (Modifier)
The steps for IUPAC naming are:
Step 1: Determine the longest carbon chain and the parent name.
Step 2: List down the substituents present and their locants.
Step 3: Combine the locants, substituents, and parent name.
Name the aldehyde displayed below.