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, b, c, or d without using any other words.
Options:
a O=C1CN=C(c2ccccn2)c2cc(Br)ccc2N1
b Cc1ccccc1-n1c(C)nc2ccccc2c1=O
c Cc1ccc(N=CN(C)Sc2ccc(Cl)cc2)c(C)c1
d CCN1CCCC1CNS(=O)(=O)c1cc(Cl)c(N)cc1OC
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}