| —— | 
                                        (1R,2R,4S,6R,8S,13S,14R,16S,17S)-16-[tert-butyl(dimethyl)silyl]oxy-4-methoxy-9,13,17-trimethyl-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-9-en-11-one | 
                                        652131-43-6 | 
                                        C27H44O5Si | 
                                        476.729 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        tert-butyl-[[(1R,2R,4S,6R,8S,13S,14R,16S,17S)-4-methoxy-9,13,17-trimethyl-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadec-9-en-16-yl]oxy]-dimethylsilane | 
                                        652131-42-5 | 
                                        C27H46O4Si | 
                                        462.745 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        (1R,6R,8S,13S,14R,16S,17S)-16-[tert-butyl(dimethyl)silyl]oxy-9,13,17-trimethyl-5,18-dioxapentacyclo[12.5.0.01,6.02,17.08,13]nonadeca-2,9-dien-4-one | 
                                        185013-61-0 | 
                                        C26H40O4Si | 
                                        444.687 |