Anthony Nicholas Orban, 32, had already been convicted earlier this month for kidnapping the woman two years ago from the Ontario Mills Mall and then sexually assaulting her at gunpoint. Prosecutors said the woman escaped when Orban was distracted by an incoming cellphone call.
Orban's attorney argued his client wasn't responsible for his actions because the Zoloft effectively rendered him insane during the crimes.
Orban, a former Marine, is scheduled to be sentenced on Aug. 9. He could face a life sentence.