The One With Monica's Thunder - S7-E1
Visible crew/equipment: After Ross walks in with the champagne and candy bar, in the shot of Monica shouting, "I'm getting married...," on the balcony, studio lighting can be seen inside above Joey.
The One With Monica's Thunder - S7-E1
Visible crew/equipment: When Monica says she's opened the door to the past, a little bit of a stage light is visible above her head.
Answer: The painting doesn't have a name, and if it does it is never mentioned in this episode.