What time does the long distance bus Qufu-> Tai'an leave QF city, and what is it's number?

Hello, I am planning a trip for some friends and me. We stay at the foot of Shimen shen (Shimen Mountain) and we would like to go to Tai'an for the weekend. So we will take city bus number 11, which will take us to the big road that connects QF with Tai'an. There we have to take the bus coming from QF, going to Tai'an. Now, does anyone know when this second bus leaves QF and what number it is? And do you know if that bus wil go toone of the train stations in Tai'an? Or if you know another good stop for us, as we would like to get some lunch before we take a bus bringing us to the start of Taishan Trail.

Thanks!