Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

A fluorine-containing ether compound represented by Formula (1) shown below:

• R1—R2—CH2—R3a—CH2—R4a—CH2—R3b—CH2—R4b—CH2—R3c—CH2—R5—R6 (1)
• (in Formula (1), R3a, R3b, and R3c are perfluoropolyether chains;
• some or all of R3a, R3b, and R3c may be the same or all of them may be different from each other;
• R2, R4a, R4b, and R5 are divalent linking groups having at least one polar group selected from the group consisting of a hydroxyl group, an amino group, a carboxy group, and a sulfo group;
• some or all of R2, R4a, R4b, and R5 may be the same or all of them may be different from each other;
• R2 has an oxygen atom at an end that is bonded to R1;
• R5 has an oxygen atom at an end that is bonded to R6;
• R1 and R6 are an end group bonded to an oxygen atom located at an end of R2 or R5, and may be the same as or different from each other;
• and R1 and R6 are an organic group having 1 to 50 carbon atoms or a hydrogen atom, and at least one of them is a group in which a cyano group is bonded to a carbon atom of an organic group having 1 to 8 carbon atoms).