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 3-amino-N-(3-methoxycyclobutyl)-1-(4-methyl-3-phenoxyphenyl)-2-oxothieno[2,3-b]pyrazine-6-carboxamide ?
user
C25H24N4O4S
assistant