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: OC1(c2ccc(F)cc2)c2ccccc2C2=NCCN21
b: COc1ccc2c(c1)c(CC(=O)Oc1ccc(NC(C)=O)cc1)c(C)n2C(=O)c1ccc(Cl)cc1
c: Cc1nc2n(c(=O)c1CCN1CCC(c3noc4cc(F)ccc34)CC1)CCCC2O
d: C1=C2CCCNC2C2CC1C1CCCCN1C2
e: CCOC(=O)C(C#N)C(=O)Cc1c(C)n(C(=O)c2ccc(Cl)cc2)c2ccc(OC)cc12
Answer: d
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}