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 other words.
Options:
[a] CCOC(=O)C=CC(=O)OC=C[N+](=O)[O-]
[b] CC1(C)CC(=O)c2c(nc(SSc3nc4c(c(-c5ccc(Br)cc5)c3C#N)C(=O)CC(C)(C)C4)c(C#N)c2-c2ccc(Br)cc2)C1
[c] COC1(C)C(=O)N2C1N(C(=O)OC(C)(C)C)CC2(C)C
[d] O=C(O)c1nn[nH]c1S
Answer: a, b
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}
1-O-ethyl 4-O-(2-nitroethenyl) but-2-enedioate