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 [(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-2-[(9-phenylxanthen-9-yl)oxymethyl]oxolan-3-yl] acetate ?
user
C31H28N2O7
assistant