Keywords: ICZJCUYQFKPVHU-IMRWOHAXSA-N; OGLFTTHUASEWEH-TYBNXFRGSA-N; SCQWNYQIOKUMKH-AODGPMNPSA-N; OGLFTTHUASEWEH-CXBFZGAFSA-N; Marine natural products; Sponge; Carteriospongia; Homoscalarane; Sesterterpenes; Antiproliferative activity; Nuclear magnetic resonance;