You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 5-[2-[4-[bis(2,3-dihydroxypropyl)amino]-2-methylphenyl]hydrazinyl]-3-methylthiophene-2,4-dicarbonitrile ?
user
C20H25N5O4S
assistant