Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest acute oral toxicity (LD50 in rats).
Constraint: You must select all options from a or b without using any additional words.
Options:
(a) COc1ccc2c(c1)c(CC(=O)Oc1cccc(Cl)c1)c(C)n2C(=O)c1ccc(Cl)cc1
(b) CCOC(=O)C(C)Oc1ccc(Oc2nc3ccc(Cl)cc3s2)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}