Please answer both parts to the questions completely. I will rate the answer afterwards.

For a diels-alder reaction between anthracene and maleic anhydride, are the exo and endo forms of product 9,10-dihydroanthracene-9,10-,-succinic acid anhydride different stereoisomers or are they the same molecule? Explain your answer by drawing the molecule.

Would it be favorable to get a 1,4-adduct of anthracene and maleic anhydride? Why or why not? If the 1,4-adduct of anthracene and maleic anhydride had formed, would it have different exo and endo isomers? Yes or no and why?