User: I want to know more about the molecule with SMILES CC1(CCCc2cc(=O)oc3[nH]c(=O)[nH]c(=O)c23)CC1.
Assistant: How can I help?
User: How many heavy (non-hydrogen) atoms does this compound have?
Assistant: 20
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#}
CC1(CCCc2cc(=O)oc3[nH]c(=O)[nH]c(=O)c23)CC1
CC1(CCCc2cc(=O)oc3[nH]c(=O)[nH]c(=O)c23)CC1
5-[3-(1-methylcyclopropyl)propyl]-1H-pyrano[2,3-d]pyrimidine-2,4,7-trione
How many heavy (non-hydrogen) atoms does this compound have?
20