Solanum - one of the S. nigrum group - either S. nodiflorum. S. nigrum or S. opacum. To resolve this you need to get images of the fruits showing the calyces and measure the anther length (and let us know this). The leaf shape etc recall S. nodiflorum or S. opacum - but from this image I cannot decide if the racemes are pseudo-umbellate or racemose - two look pseudoumbellate and one racemose.