The molecule is built around a central C=N unit. That central carbon bears three connections:
1. It is double-bonded to a nitrogen (i.e., the aforementioned C=N) that, in turn, is bonded to a benzene ring; numbering the ring so that the nitrogen-attached carbon is C-1, the benzene bears a methyl group at C-2 and a chlorine at C-5.
2. It is singly bonded to a hydroxyl group (-OH).
3. It is singly bonded to a tertiary nitrogen, which carries two additional substituents:
   a. a benzyl group (-CH2-phenyl); and
   b. an N-methylpiperidine ring attached at one of the ring carbons para to the piperidine nitrogen (the piperidine nitrogen itself is methylated).