To learn the highest tolerable dose of oxaliplatin when given in combination with the other study drugs, there will be a dose escalation process that will go as follows. The dose of oxaliplatin that you receive will depend on when you are enrolled in this study. The dose of the other 3 study drugs that you receive will be the same for each participant on this study. At first, 6 participants will be enrolled at the first dose level of oxaliplatin. If their disease does not get worse and no intolerable side effects occur, there will be another 6 patients enrolled at the next higher dose level. This dose escalation process will continue in this way until 8 dose levels have been reached without intolerable side effects occurring.