You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 3-[3-[(E)-1-(2-amino-6-hydroxyphenyl)but-1-enyl]phenyl]-5-(4-methylpiperazin-1-yl)thieno[3,2-b]pyran-7-one;methanamine ?
user
C29H34N4O3S
assistant