如何用乳胶对齐表格的长标题?

我有一个长长的乳胶笔,上面的标题不适合一行,例如。

\begin{longtable}{lrrr}
\caption{This is a very long caption that does not fit into one line}
...
\end{longtable}

Figure 1: This is a very long caption that does not fit
into one line

我希望标题的第二行与标题的开头对齐(而不是文本“图1”),使其看起来像

Figure 1: This is a very long caption that does not fit
          into one line

或者至少使标题文本居中。 我该怎么做?