phenolic steroid C18H23OR PMID:4622133 KEGG:C02453 CHEBI:8074 PMID:4303459 a phenolic steroid chebi_ontology CC12CCC3C(CCC4=CC(O)=CC=C34)C1CCC2[*] PMID:4957953 0 MetaCyc:PHENOLIC-STEROID 255.375 CHEBI:25968 PMID:4753431 PMID:13752799 CHEBI:177917 255.17489 PMID:4798212 PMID:5790329 phenolic steroids PMID:6078089 phenols 3-hydroxy steroid