What is IUPAC name of the following compound?

Step-by-step solution

IUPAC nomenclature follows priority rules where aldehyde and carboxylic acid groups both take precedence, but benzaldehyde derivatives permit common naming conventions. The compound contains aldehyde, carboxylic acid, and methyl substituents on a benzene ring. While carboxylic acid holds higher priority, benzaldehyde serves as an acceptable parent name when it yields clearer nomenclature. Numbering begins at the aldehyde carbon (C-1), placing carboxylic acid ortho at C-2 and methyl para at C-4. Substituents are lis