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: Clc1cc(Cl)c(Cl)cc1Cl
b: CCCC(=O)c1ccc2c(c1)N(CCCN(C)C)c1ccccc1S2
c: Cc1c(C)c2c(c(C)c1OC(=O)C(C)(C)Oc1ccc(Cl)cc1)CCC(C)(CCCC(C)CCCC(C)CCCC(C)C)O2
d: CCN(CC)CCNc1c(Cl)cc(C)c2ncccc12
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}