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 additional words.
Options:
a.) CC(Br)c1ccccc1
b.) O=[N+]([O-])c1ccc(I)c([N+](=O)[O-])c1
c.) CCOC1=CC(c2ccccc2)(c2ccccc2)N(O)c2ccccc21
d.) CCCC(=O)c1cc(O)c(O)cc1O
Answer: a, 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}