You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[(2Z,5S)-2-[(Z)-(2-butoxyphenyl)methylidenehydrazinylidene]-4-oxo-1,3-thiazolidin-5-yl]acetic acid .
user
C16H19N3O4S
assistant