Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a: COc1cccc2c1cc([N+](=O)[O-])c1c(C(=O)O)cc3c(c12)OCO3
b: Cc1nnc(C(CCN2CC3CCC2CC3)(c2ccccc2)c2ccccc2)o1
c: CCn1cc(C(=O)O)c(=O)c2ccc(C)nc21
d: COP(=O)(OC)C(OC(C)=O)=C(Cl)Cl
e: CCCCCCC(C)OC(=O)COc1nc(F)c(Cl)c(N)c1Cl
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}