the factors set forth in section 3553(a) of title 18, United States Code, vacate the previously imposed sentence, or impose a reduced sentence on any count of conviction as if the removal or placement was in effect at the time that the offense was committed. Nothing in this section may be construed to require a court to vacate or reduce any sentence. . 7. Registration requirements related to research (a) Alternative registration process for schedule I research Section 303 of the Controlled Substances Act ( 21 U.S.C. 823 ) is amended by adding at the end the following new subsection: (m) Special provisions for those conducting certain research with schedule I controlled substances (1) In general Notwithstanding subsection (f), a practitioner may conduct research that is described in paragraph (2) and that is with one or more controlled substances in schedule I if one of the following conditions is satisfied: (A) Researcher with a current schedule I or II research registration If the practitioner is registered to conduct research with a controlled substance in schedule I or II, the practitioner may conduct research under this paragraph 30 days after the practitioner has sent a notice to the Attorney General containing the following information, with respect to each substance with which the research will be conducted: (i) The chemical name of the substance. (ii) The quantity of the substance to be used in such research. (iii) Demonstration that the research is described in paragraph (2), which demonstration can be satisfied— (I) in the case of research described in paragraph (2)(A), by supplying the number of the application submitted under section 505(i) of the Federal Food, Drug, and Cosmetic Act or section 351(a)(3) of the Public Health Service Act and the sponsor of record on such application