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) CCCC(C)(Oc1ccc(Cc2ccc(Cl)cc2)cc1)C(=O)OCc1cccnc1
b) O=C(Oc1cc(C(=O)Oc2cc(C(=O)OC3C(OC(=O)c4cc(O)c(O)c(O)c4)CC(O)(C(=O)O)CC3OC(=O)c3cc(O)c(O)c(O)c3)cc(O)c2O)cc(O)c1O)c1cc(O)c(O)c(O)c1
c) OC1(c2ccccc2)c2ccccc2C2=NCCN21
d) O=c1oc2ccccc2c(O)c1C1CC(c2ccc(-c3ccccc3)cc2)Cc2ccccc21
e) CN1CCC(c2c[nH]c3ccccc23)C1
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}