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 additional words.
Options:
a. COc1ccc(OC)c(NC(=O)CNC(=O)Cc2ccc(C(=O)c3ccc(C)cc3)n2C)c1
b. CCCC1=NN(c2ccccc2)C(=O)C1C=O
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}