The core of the molecule is an oxazoline: a five-membered heterocycle with the heteroatoms in a meta relationship. Number the ring O1-C2=N3-C4-C5, with a double bond between C2 and N3 and all other ring bonds single.

Substituents on the ring:
- C2: bears a hydroxyl group.
- C5: is a chiral center, S-configured, and carries a cyclobutyl group (a fully saturated four-carbon ring).
- C4: is a chiral center, S-configured, and carries two substituents:
  1. A methoxy group (-OCH3).
  2. a benzene ring that is para-substituted with a formyl group (-CHO) relative to the attachment point.

No additional stereochemical elements or substituents are specified beyond the S configurations at C4 and C5.