User: I want to know more about the compound with SMILES Nc1nc(OCCc2ccc(Cl)cc2)nc2c1ncn2[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O.
Assistant: That sounds interesting, how can I help?
User: What is the polar surface area (PSA) value of this compound?
Assistant: The answer is 148.77
User: I want to know more about the {#molecule|chemical|compound!} with {SMILES__description} {SMILES#}.
Assistant: {#Sure, what is your question?|How can I help?|That sounds interesting, how can I help?|Interesting, how can I help?!}
User: {quest#}
Assistant: {#The answer is |!}{answ#}
Nc1nc(OCCc2ccc(Cl)cc2)nc2c1ncn2[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O
Nc1nc(OCCc2ccc(Cl)cc2)nc2c1ncn2[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O
(2R,3R,4S,5R)-2-[6-amino-2-[2-(4-chlorophenyl)ethoxy]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol
What is the polar surface area (PSA) value of this compound?
148.77