Task: Please answer the multiple choice question.
Question: Which molecules are not mutagenic?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
[a] Nc1cc([N+](=O)[O-])cc(S(=O)(=O)O)c1O
[b] O=Cc1cccc([N+](=O)[O-])c1
Answer: a
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}