2-cyclopentyl-5-(furan-2-ylmethylidene)cyclopentan-1-one (5E)-2-cyclopentyl-5-(furan-2-ylmethylidene)cyclopentan-1-one 2-cyclopentyl-5-(2-furylmethylene)cyclopentan-1-one (5E)-2-cyclopentyl-5-(2-furylmethylene)cyclopentan-1-one (5E)-2-cyclopentyl-5-(2-furylmethylene)-1-cyclopentanone 2-cyclopentyl-5-(2-furylmethylene)-1-cyclopentanone (3E)-3-(2-furylmethylene)-1,1'-bi(cyclopentyl)-2-one MLS000729936 SMR000308213