(CAS No. 58–36–6) (provided for in subheading 2934.99.18) Free No change No change On or before 12/31/2020 . 627. Etoxazole Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.35 2-(2,6-Difluorophenyl)-4-[2-ethoxy-4-(2-methyl-2-propanyl)phenyl]-4,5-dihydro-1,3-oxazole (Etoxazole) (CAS No. 153233–91–1) (provided for in subheadling 2934.99.18) 5.0% No change No change On or before 12/31/2020 . 628. Agricultural chemical Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.36 3-Phenyl-5-(2-thienyl)-1,2,4-oxadiazole (Tioxazafen) (CAS No. 330459–31–9) (provided for in subheading 2934.99.18) Free No change No change On or before 12/31/2020 . 629. Crisaborole Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.37 4-[(1-Hydroxy-1,3-dihydro-2,1-benzoxaborol-5-yl)oxy]benzonitrile (Crisaborole) (CAS No. 906673–24–3) (provided for in subheading 2934.99.30) 6.4% No change No change On or before 12/31/2020 . 630. Sarolaner Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.38 1-{5′-[(5S)-5-(3,5-Dichloro-4-fluorophenyl)-4,5-dihydro-5-(trifluoromethyl)-1,2-oxazol-3-yl]-1H,3′H-spiro[azetidine-3,1′-[2]benzofuran]-1-yl}-2-mesylethanone (Sarolaner) (CAS No. 1398609–39–6) (provided for in subheading 2934.99.30) Free No change No change On or before 12/31/2020 . 631. Elbasvir (MK-8742) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.07.39 Methyl {(2S)-1-[(2S)-2-{4-[(6S)-3-{2-[(2S)-1-{(2S)-2-[(methoxycarbonyl)amino]-3-methylbutanoyl}-2-pyrrolidinyl]-1H-imidazol-4-yl}-6-phenylindolo[1,2-c][1,3]benzoxazin-10-yl]-1H-imidazol-2-yl}-1-pyrrol idinyl]-3-methyl-1-oxo-2-butanyl}carbamate (Elbasvir) (CAS No. 1370468–36–2) (provided for in subheading 2934.99.30) Free No change No change On or before 12/31/2020 . 632. Uprifosbuvir (MK-3682) Subchapter II of chapter