Complex sentence: De Mol-like many of his contemporaries-had a great interest in poetry and scientific experiments and so, in 1774, he bought a clay part from the Muiderslot, left over from the porcelain factory in Weesp.
Split into simpler sentences: De Mol-like many of his contemporaries-had a great interest in poetry and scientific experiments. In 1774 De Mol bought a clay part, stored in the Muiderslot, left over from the porcelain factory in Weesp.