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 O=C(c1ccccc1)C(O)c1ccccc1
b Nc1c(O)cccc1C(=O)CC(N)C(=O)O
c C=C[C@](C)(CCC=C(C)C)OC(=O)c1ccccc1N
d NNc1ccc([N+](=O)[O-])cc1[N+](=O)[O-]
Answer: a, b, c
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}