Core skeleton: A single benzene ring.

Ring substitution pattern (number the ring so that the methoxy group is at C-1 and proceed clockwise):
- C-1: methoxy (-O-CH3).  
- C-2: chlorine.  
- C-5: a side-chain described below.  
All other ring positions are unsubstituted.

Side-chain at C-5 (C* is the carbon directly attached to the ring):
C* is tetrahedral and bears:
1. one hydrogen,
2. the aromatic carbon (already specified),
3. a propyl-substituted secondary amine, meaning C* is attached to a nitrogen that also bears one hydrogen and is further bonded to a straight three-carbon chain,
4. a three-carbon branch consisting of C*-C1-C2-C3, in which C2 carries a methoxymethyl substituent. In this group, C2 is bonded to a methylene linker, which is connected to an oxygen atom, and that oxygen is bonded to a terminal methyl group.