Task: Please answer the multiple choice question.
Question: Which molecules are not Ames mutagenic?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] Fc1cc(F)c2ncccc2c1
[b] Cc1cc(C(C)(C)C)c(O)c(C(C)(C)C)c1
[c] Cc1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-]
[d] C=CCOC(=O)c1ccccc1N
Answer: b, d
Task: Please answer the multiple choice question.
Question: Which molecules are {mutagenic#not &NULL}{mutagenic__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%mutagenic%}
Answer: {%multiple_choice_result}