(v) of subparagraph (A) (without regard to the phrase by the taxpayer in clause (ii) thereof). (2) Biobased content The term biobased content means, with respect to any renewable chemical, the biobased content of the total mass of organic carbon in such chemical (expressed as a percentage), determined by testing representative samples using the American Society for Testing and Materials (ASTM) D6866. (3) Renewable biomass The term renewable biomass has the meaning given such term in section 9001(13) of the Farm Security and Rural Investment Act of 2002 ( 7 U.S.C. 8101(13) ). (d) National limitation on credits for renewable chemicals See section 48E(e) for rules relating to national limitation on credits under this section. (e) Coordination with investment credit for renewable chemical production facilities See section 48E(f) for rules coordinating section 48E with this section. (f) Termination Notwithstanding any other provision of this section or section 48E, the Secretary may not allocate any credit amount under this section to any taxable year which begins more than 5 years after the date of the enactment of this section. . (2) Credit to be part of general business credit Subsection (b) of section 38 of such Code is amended by striking plus at the end of paragraph (35), by striking the period at the end of paragraph (36) and inserting , plus , and by adding at the end the following new paragraph: (37) the renewable chemicals production credit determined under section 45S(a). . (b) Investment credit in lieu of production credit (1) In general Section 46 of the Internal Revenue Code of 1986 is amended by striking and at the end of paragraph (5), by striking the period at the end of paragraph (6) and inserting , and , and by adding at the end the following new paragraph: (7) the renewable chemical production facilities credit. . (2) Renewable chemical production facilities credit Subpart E of part IV of subchapter A of chapter 1 of such Code is amended by inserting after section 48D the following: 48E.