Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a. O=C(O)CS(=O)(=O)O
b. CCCCC(CC)COP(=S)(S)OCC(CC)CCCC
c. CSc1nc(-c2ccc(Cl)cc2)n(-c2ccc(Cl)cc2)n1
d. C=CCOC=C
e. CCN(N=O)C(C)C
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}