poly(ethylene glycol) tetratriacontaethylene glycol 1514.902 1515.80232 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,99-tritriacontaoxahenhectane-1,101-diol BPOKBDAASNIQMO-UHFFFAOYSA-N Beilstein:10328095 C68H138O35 CHEBI:46798 InChI=1S/C68H138O35/c69-1-3-71-5-7-73-9-11-75-13-15-77-17-19-79-21-23-81-25-27-83-29-31-85-33-35-87-37-39-89-41-43-91-45-47-93-49-51-95-53-55-97-57-59-99-61-63-101-65-67-103-68-66-102-64-62-100-60-58-98-56-54-96-52-50-94-48-46-92-44-42-90-40-38-88-36-34-86-32-30-84-28-26-82-24-22-80-20-18-78-16-14-76-12-10-74-8-6-72-4-2-70/h69-70H,1-68H2 OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO chebi_ontology