Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a) C=COP(=O)(OCC)OC(CCl)c1cc(Cl)c(Cl)cc1Cl
b) CCn1c(=O)oc2ccc(Cl)cc21
c) CCOP(=S)(OCC)Oc1cc(C)nc2ccccc12
d) CC(=O)OCC(C)c1ccccc1
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}