You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(2R,5R)-3-hydroxy-5-(6-oxo-1H-purin-9-yl)oxolan-2-yl]methyl 4-pyren-1-ylbutyl hydrogen phosphate .
user
C30H29N4O7P
assistant