Task: Please answer the multiple choice question.
Question: Which molecules are not toxic in the estrogen receptor alpha assay?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a: Cc1ccc(C(C)(C)c2ccc(C)cc2)cc1
b: C=C1C[C@@H]2[C@H](CC[C@]3(C)C(=O)CC[C@@H]23)[C@@]2(C)C=CC(=O)C=C12
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {toxicity_NR-ER#not &NULL}{toxicity_NR-ER__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%toxicity_NR-ER%}
Answer: {%multiple_choice_result}