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 other words.
Options:
(a) CC1C(=O)OC2CCN3CC=C(COC(=O)C(C)(O)C1(C)O)C23
(b) CCC(C)OC=O
(c) CCOP(=O)(OC=C(SCC)SCC)OCC
(d) Cc1cc(C(=O)Nc2ccccc2)c(C)o1
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}