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, d, or e without using any additional words.
Options:
a. NS(=O)(=O)c1cc2c(cc1Cl)NC(CC1CCCC1)NS2(=O)=O
b. COP(=S)(OC)SCCSC(C)C
c. O=C(C=Cc1ccccn1)OCCN1CCN(c2ccc(Cl)cc2)CC1
d. O=C1c2ccccc2C(=O)C1c1ccc(Cl)cc1
e. COP(=O)(OC)Oc1cc(C)n(C)c(=O)c1
Answer: b
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}