carotenoid epsilon-end group epsilon-carotene 536.438 536.87264 Beilstein:2067410 C40H56 CC(\C=C\C=C(C)\C=C\C1C(C)=CCCC1(C)C)=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C1C(C)=CCCC1(C)C CHEBI:32549 InChI=1S/C40H56/c1-31(19-13-21-33(3)25-27-37-35(5)23-15-29-39(37,7)8)17-11-12-18-32(2)20-14-22-34(4)26-28-38-36(6)24-16-30-40(38,9)10/h11-14,17-28,37-38H,15-16,29-30H2,1-10H3/b12-11+,19-13+,20-14+,27-25+,28-26+,31-17+,32-18+,33-21+,34-22+ KEGG:C16276 KNApSAcK:C00022813 QABFXOMOOYWZLZ-JLTXGRSLSA-N chebi_ontology epsilon,epsilon-carotene epsilon-carotene cyclic carotene