Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
(a) CC(C)CCCCCOC(=O)c1ccccc1C(=O)OCCCCCC(C)C
(b) COc1c(OP(=S)(OC)OC)cnn(C)c1=O
(c) CCN(C)CCC(CC=C(C)C)(C(N)=O)c1cccc2ccccc12
(d) COc1ccc(Oc2ccc(NC(=O)N(C)C)cc2)cc1
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}