You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-amino-9-[(4R,5S,6R,8S,13R,14R,16R)-6-(6-aminopurin-9-yl)-5-chloro-11,16-dihydroxy-11-oxo-7,10,12,15-tetraoxa-11lambda5-phosphatricyclo[11.2.1.04,8]hexadecan-14-yl]-1H-purin-6-one into molecular formula.
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C21H24ClN10O8P
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