You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
hexyl 2-[[[(2R)-1-[6-[[3-[2,4-dimethyl-6-(2-oxopropyl)phenyl]-3-methylbutanoyl]amino]purin-9-yl]propan-2-yl]oxymethyl-[(1-hexoxy-2-methyl-1-oxopropan-2-yl)amino]phosphoryl]amino]-2-methylpropanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C45H72N7O8P
assistant