Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest rat LD50 (oral exposure).
Constraint: You must select all options from a or b without using any other words.
Options:
a) O=C(c1ccc(Cl)cc1)n1cc(Cc2nnn[nH]2)c2ccccc21
b) COCC(=O)N(c1c(C)cccc1C)N1CCOC1=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}