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) COC(=O)C=C(CC(=O)OC)OP(=O)(OC)OC
(b) CC1Oc2ccccc2CC1N(C)C
(c) NC(=O)C1c2ccccc2C=Cc2ccccc21
(d) C=C(CO)C(=O)OCC
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}