; and (B) the Committee on Armed Services of the House of Representatives. (2) Fentanyl The term fentanyl means fentanyl and any fentanyl-related substance. (3) Fentanyl-related substance The term fentanyl-related substance — (A) means any substance that is structurally related to fentanyl by 1 or more modifications of— (i) replacement of the phenyl portion of the phenethyl group by any monocycle, whether or not further substituted in or on the monocycle; (ii) substitution in or on the phenethyl group with alkyl, alkenyl, alkoxyl, hydroxyl, halo, haloalkyl, amino, or nitro groups; (iii) substitution in or on the piperidine ring with alkyl, alkenyl, alkoxyl, ester, ether, hydroxyl, halo, haloalkyl, amino, or nitro groups; (iv) replacement of the aniline ring with any aromatic monocycle whether or not further substituted in or on the aromatic monocycle; and (v) replacement of the N-propionyl group with another acyl group; and (B) does not include a substance described in subparagraph (A) that is— (i) controlled by action of the Attorney General pursuant to section 201 of the Controlled Substances Act ( 21 U.S.C. 811 ); (ii) expressly listed in Schedule I of section 202(c) of that Act ( 21 U.S.C. 812 ) or another schedule by a statutory provision