The molecule is built around a tertiary nitrogen. Its three substituents are:

This nitrogen carries three substituents:
a) a straight four-carbon chain (n-butyl group),
b) a two-carbon linker (-CH2-CH2-) leading to an oxygen atom bound to a methyl group (-CH2-CH2-O-CH3)
c) an acyl group forming a linkage -C(=O)-.

In the benzene ring, the attachment point is defined as position 1. At positions 2 and 3, the ring bears a fluorine atom and a chlorine atom, respectively.