spiro,furan,pyrrolizine
Furan
37603-06-88-[(5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl]-1-phenyl-1,3,8-triazaspiro[4.5]decan-4-one
158955-51-22(5H)-Furanone,3-chloro-5-[[(1R,2S,5R)-5-methyl-2-(1-methylethyl)cyclohexyl]oxy]-4-(1-pyrrolidinyl)-, (5S)-