Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest acute oral toxicity rat LD50.
Constraint: You must select all options from a or b without using any additional words.
Options:
a. Cn1c(=O)c2c(ncn2CC(=O)O)n(C)c1=O
b. Cc1ccc(N=CN(C)Sc2ccc(Cl)cc2)c(C)c1
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}