Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a: COP(=S)(OC)SC(C)CSCC1CC2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl
b: COc1ccc2c(c1)c(CC(=O)Oc1cccc(Cl)c1)c(C)n2C(=O)c1ccc(Cl)cc1
c: OC(c1ccc(Cl)cc1)(c1ccc(Cl)cc1)c1cccnc1
d: CN(C)C(=O)N(C(=O)c1ccccc1)c1ccc(Cl)c(Cl)c1
e: CCCCC1C(=O)NN(c2ccccc2)C1=O
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}