All

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 D02 Organic Chemicals D009930 +
  D02.033 Alcohols D000438 +
   D02.033.455 Glycols D006018 +
    D02.033.455.250 Ethylene Glycols D005026 +
     D02.033.455.250.700 Polyethylene Glycols D011092 +
      D02.033.455.250.700.685 Polyhydroxyethyl Methacrylate D011102 
 D02 Organic Chemicals D009930 +
  D02.241 Carboxylic Acids D002264 +
   D02.241.081 Acids, Acyclic D000144 +
    D02.241.081.069 Acrylates D000179 +
     D02.241.081.069.800 Polymethacrylic Acids D011109 +
      D02.241.081.069.800.700 Polyhydroxyethyl Methacrylate D011102 
 D25 Biomedical and Dental Materials D001697 +
  D25.720 Polymers D011108 +
   D25.720.716 Plastics D010969 +
    D25.720.716.822 Resins, Synthetic D012117 +
     D25.720.716.822.111 Acrylic Resins D000180 +
      D25.720.716.822.111.650 Polymethacrylic Acids D011109 +
       D25.720.716.822.111.650.750 Polyhydroxyethyl Methacrylate D011102 
 D25 Biomedical and Dental Materials D001697 +
  D25.720 Polymers D011108 +
   D25.720.741 Polyethylene Glycols D011092 +
    D25.720.741.685 Polyhydroxyethyl Methacrylate D011102