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 additional words.
Options:
[a] COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C
[b] Cc1cc(=O)oc2cc(OP(=O)(OCCCl)OCCCl)ccc12
[c] FC(F)(F)c1nc2c(Br)c(Cl)c(Br)c(Cl)c2[nH]1
[d] CN(c1ccc(Cl)cc1)S(=O)(=O)c1ccc(Cl)cc1
Answer: b
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}