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 additional words.
Options:
a) COc1cc(C(=O)NC2CCCNC2)cc(OC)c1OC
b) CN1CCC(c2c[nH]c3ccccc23)C1
c) CCN1CC2CN(C)CC(C1)C2OC(=O)c1ccc(Cl)cc1
d) CCOC1c2ccccc2C(=O)N(C)c2ccccc21
e) OC1(c2ccc(Cl)cc2)c2ccccc2C2=NCCN21
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}