Complex sentence: Tom finally surrenders with a white flag, pulls out his fifth whisker and hands it to Pecos, who then announces to Jerry that he has to leave and reminds him to watch his concert the next night.
Split into simpler sentences: Tom finally surrenders with a white flag, pulls out his fifth whisker and hands it to Pecos. As he leaves, Pecos announces to Jerry that he has to leave and reminds him to watch his concert the next night.