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: CCCN(CCC)C(=O)C(CCC(=O)OCCCOC(=O)Cc1c(C)n(C(=O)c2ccc(Cl)cc2)c2ccc(OC)cc12)NC(=O)c1ccccc1
b: COC1CCC(OC2CC3(CC(O)C(C)C(C(C)C=C(C)C(=O)C(C)CC(C)C(=O)O)O3)OC2(C)C2CCC(C)C3(OC(C4OC(O)(CO)C(C)CC4C)CC3C)O2)OC1C
c: COC(C)CC(OC)OC
d: Cc1ccc2nc3c4cccc5cccc(c(=O)n3c2c1)c54
Answer: c
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}