3d image of 15-crown-5 skeletal formula

15-crown-5 pentamer ethylene oxide ether methacryloyl chloride crown initio lithium cation organic chemistry ion synthesis dibenzo benzo complexes ball stick ionophore cyclic chemical compound oligomer complexing agent structure methylthio mechanism methylbenzene 3d rendering molecule molecular structural formula skeletal isomer stereoisomer orbital iupac cas einecs flavis heterocyclic heterocycle ring