You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-[[hydroxy(phosphonooxy)phosphoryl]methyl]phosphinic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H18N5O12P3
assistant