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) CCCCc1c(OC(=O)C23CC4CC(CC(C4)C2)C3)n(-c2ccccc2)n(-c2ccccc2)c1=O
(b) Fc1ccc(C(c2ccccc2)(c2ccccc2F)n2ccnc2)cc1
Answer: b
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}