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, d, or e without using any other words.
Options:
a CCCC(=NOCC)C1=C(O)CC(CC(C)SCC)CC1=O
b C=CCNC(=O)ON=C1SCOC1C
c COP(=O)(OC)OC
d C=C[Si](Cl)(Cl)Cl
e COc1ccc2c(=O)c(C)c(C)oc2c1CN1CCOCC1
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}