Organopolysiloxane, organopolysiloxane composition, cured product thereof, organopolysiloxane for near-infrared optical waveguide, organopolysiloxane composition for near-infrared optical waveguide, cured product for near-infrared optical waveguide, near-infrared optical waveguide, near-infrared optical transmission member, and near-infrared optical waveguide production method

A non-linear organopolysiloxane represented by Formula [21] and having no aromatic structure:

• where in Formula [21], R2-1 to R2-5 and R2-7 to R2-11 are each independently at least one group selected from an organic group, a reactive functional group, and a hydrogen atom;
• R2-1 to R2-3, R2-7, R2-8, R2-10, and R2-11 do not contain a polymerizable alkenyl group;
• R2-6 is at least one organic group containing a polymerizable alkenyl group, which can be the same or different;
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