ELECTROLYTIC SOLUTION, ELECTROCHEMICAL DEVICE, LITHIUM-ION SECONDARY BATTERY, MODULE AND COMPOUND

An electrolytic solution containing: a compound (1) represented by the following formula (1): wherein Ris a C2-C7 organic group and optionally includes at least one selected from the group consisting of a hetero atom and an unsaturated bond; and Ris a C1-C3 organic group and optionally includes at least one selected from the group consisting of a hetero atom and an unsaturated bond.