You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-[4-[4-[[4-[3-[(dimethylamino)methyl]-6,8-dihydro-5H-imidazo[1,5-a]pyrazin-7-yl]furo[3,2-d]pyrimidin-2-yl]amino]phenyl]piperazin-1-yl]ethanone ?
user
C27H33N9O2
assistant