Using CCCn1c(=O)[nH]c(=O)c2[nH]c(C34CCC(C=CC(=O)OC)(CC3)CC4)nc21 to produce CCCn1c(=O)[nH]c(=O)c2[nH]c(C34CCC(CCC(=O)OC)(CC3)CC4)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.