Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a: O=C(O)CCC(=O)c1ccc(C2CCCCC2)c(Cl)c1
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: CN(C)CCC=C1c2ccccc2Sc2ccc(Cl)cc21
d: CCN(CC)c1nc(Cl)nc(N(CC)CC)n1
Answer: b
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}