Task: Please answer the multiple choice question.
Question: Which molecules are active against HIV?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
[a] O=C(O)CCCCCCCCCCCBr
[b] NCCCCCS(=O)(=O)O
[c] C=CCCC[Sn](c1ccccc1)(c1ccccc1)c1ccccc1
[d] Cc1ncc([N+](=O)[O-])n1CCNC(=O)CCCCn1ccnc1[N+](=O)[O-]
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {activity_HIV#not &NULL}{activity_HIV__names__adjective}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%activity_HIV%}
Answer: {%multiple_choice_result}