 9. Females of childbearing potential must not have had unprotected sexual intercourse within 30 days before study entry and must agree to use two highly effective methods of contraception e.g., total abstinence, an intrauterine device, a double-barrier method condom and occlusive cap - diaphragm or cervicalvault caps - with spermicidal foamgelfilmcreamsuppository, a contraceptive implant, an oral contraceptive, or have a vasectomized partner with confirmed azoospermia throughout the entire study period and for 30 days after study drug discontinuation. If currently abstinent, the subject must agree to use a double barrier method with spermicide as described above if she becomes sexually active during the study period or for 30 days after study drug discontinuation. Females who are using hormonal contraceptives must have been on a stable dose of the same hormonal contraceptive product for at least 4 weeks before dosing and must continue to use the same contraceptive during the study and for 30 days after study drug discontinuation. 