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)SC(C(=O)OC(C)C)c1ccccc1
b.) CCCCCCCCOC(=O)c1ccccc1C(=O)OCCCCCCCC
c.) C=CCc1ccc(OC=O)c(OC)c1
d.) NNC(=O)CSc1cc(Oc2ccccc2)ncn1
Answer: c
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}