<qa>  What is the doxorubicin hydrochloride IV?ARM II: Patients receive pegylated liposomal doxorubicin hydrochloride IV over 60 minutes on day 1, bevacizumab IV over 30-90 minutes on days 1 and 15, and atezolizumab IV over 30-60 minutes on days 1 and 15. 