User: I want to know more about the molecule with SMILES Nc1nc2[nH]cnc2c(=S)[nH]1.
Assistant: Sure, what is your question?
User: How many heavy (non-hydrogen) atoms does this compound have?
Assistant: The answer is 11
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#}
Nc1nc2[nH]cnc2c(=S)[nH]1
Nc1nc2[nH]cnc2c(=S)[nH]1
2-azanyl-1,9-dihydropurine-6-thione
How many heavy (non-hydrogen) atoms does this compound have?