Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (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) CCC1C(c2ccccc2)=CCC(C(=O)O)C1C
(b) CC(C)=CCC(CCN1CCCCC1)(C(N)=O)c1cccc2ccccc12
(c) CC(=O)c1ccc(S(=O)(=O)NC(=O)NC2CCCCC2)cc1
(d) O=S1c2ccccc2N(CCCN2CCN(CCO)CC2)c2cc(Cl)ccc21
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}