Task: Please answer the multiple choice question.
Question: Which molecules are mutagenic?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a. Oc1c(Cl)ccc(Cl)c1Cl
b. COc1ccc(CNC(=O)C(C)Br)cc1OC
c. CCCC(=O)OCc1cccc([N+](=O)[O-])c1
d. c1ccc(Oc2ccccc2)cc1
Answer: b
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}