1. Whether, in cases where a drug conspiracy allegedly involves multiple substances, the government must prove that the defendant conspired to distribute the specific controlled substance charged in the indictment to have resulted in death, in order to increase the defendant's statutory penalties to a mandatory-minimum of 20 years and maximum of life in prison under 21 U.S.C. § 841(b)(1)(C)?

2. Whether the government must prove that a defendant conspired to distribute the specific controlled substance analogues charged in the indictment (here, alleging "which violation involved" two specific analogues)——as opposed to conspired to distribute other substances—in order to convict a defendant of an offense under 21 U.S.C. §§ 813 and 846?

Whether the government must prove that a defendant conspired to distribute the specific controlled substance analogues charged in the indictment