You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [[(2R)-1-(6-methylpurin-9-yl)propan-2-yl]oxymethyl-phenoxyphosphoryl]-[(2S)-3-propan-2-yloxybut-3-en-2-yl]azanide into its molecular formula.
user
C23H31N5O4P-
assistant