Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a. COP(=S)(OC)SCC(=O)N(C)C=O
b. COCCO
c. C=CCONC(CCC)=C1C(=O)CC(C)(C)C(C(=O)OC)C1=O
d. CCCCCl
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}