\input{dcf-submol3}    
\input{ce-submol3} 

\chemfig{              
          {\color{red}C}
           (=[:225]O)
           (-[:90]!{dcf3}) 
        -!{ce3}
        -{\color{blue}C}
           (=[:-45]O)
        -[:90]!{dcf3}
}