def multiline_test(line):
    """
    test if the current line is a multiline with "=" at the end
    :param line: 'O1 3 -0.01453 1.66590 0.10966 11.00 0.05 ='
    :type line: string
    >>> line = 'C1    1    0.278062    0.552051    0.832431    11.00000    0.02895    0.02285 ='
    >>> multiline_test(line)
    True
    >>> line = 'C1    1    0.278062    0.552051    0.832431    11.00000    0.05 '
    >>> multiline_test(line)
    False
    """
    line = line.rpartition('=')  # partition the line in before, sep, after
    line = ''.join(line[0:2])  # use all including separator
    line = line.rstrip()  # strip spaces
    if line.endswith('='):
        return True
    else:
        return False