User: I have a question about the chemical with SMILES CN1Cc2cc(-c3ccc(N)nn3)ccc2[C@H](c2ccc3ccccc3c2)C1.
Assistant: How can I help?
User: How many heavy (non-hydrogen) atoms does this compound have?
Assistant: 28
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#}
CN1Cc2cc(-c3ccc(N)nn3)ccc2[C@H](c2ccc3ccccc3c2)C1
CN1Cc2cc(-c3ccc(N)nn3)ccc2[C@H](c2ccc3ccccc3c2)C1
6-[(4S)-2-methyl-4-naphthalen-2-yl-3,4-dihydro-1H-isoquinolin-7-yl]pyridazin-3-amine
How many heavy (non-hydrogen) atoms does this compound have?
28