User: I have a question about the molecule with SMILES C#C[C@@]1(CO)C=C[C@H](n2cc(C)c(=O)[nH]c2=O)O1.
Assistant: That sounds interesting, how can I help?
User: How many heavy (non-hydrogen) atoms does this compound have?
Assistant: The answer is 18
User: I have a question 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#}
C#C[C@@]1(CO)C=C[C@H](n2cc(C)c(=O)[nH]c2=O)O1
C#C[C@@]1(CO)C=C[C@H](n2cc(C)c(=O)[nH]c2=O)O1
1-[(2R,5R)-5-ethynyl-5-(hydroxymethyl)-2H-furan-2-yl]-5-methylpyrimidine-2,4-dione
How many heavy (non-hydrogen) atoms does this compound have?
18