Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest LD50 in rats (oral exposure).
Constraint: You must select all options from a or b without using any other words.
Options:
a O=C1CN=C(c2ccccn2)c2cc(Br)ccc2N1
b Cc1ccc(C(=O)c2ccc(CC(=O)NCC(=O)Nc3cccc(C)c3C)n2C)cc1
Answer: a
Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest {acute_toxicity__names__noun}.
Constraint: You must select all options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}