1. The molecule features an ethyl ester group, represented as -C(=O)OCH2CH3.
2. Directly attached to the ester carbon (designated as C1) is a chiral carbon (C2) with R configuration.
3. As a tertiary carbon, C2 bears two additional substituents:
   - A benzyl group (-CH2-phenyl), where the phenyl ring is unsubstituted.
   - An imine nitrogen (N).
4. The imine nitrogen (N) is double-bonded to another carbon (C3), which also carries:
   - A hydroxyl group (-OH).
   - A phenyl ring.
5. The phenyl ring attached to C3 is further substituted with an N-methyl sulfonamide group, positioned at the meta location relative to the attachment point. This group is defined as -SO2-N(CH3)H.