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-[4-[(E)-[2-(4-hydroxyphenyl)imino-4-oxo-1,3-thiazolidin-5-ylidene]methyl]-2-methoxyphenoxy]propanoic acid .
user
C20H18N2O6S
assistant