You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[[(2R)-1-(6-aminopurin-9-yl)propan-2-yl]oxymethyl-(propan-2-yloxycarbonyloxymethoxy)phosphoryl]oxymethyl propan-2-yl carbonate;(E)-but-2-enedioic acid;2-hydroxypropanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H40N5O17P
assistant