Using CCOC(=O)c1cnc(Nc2cc3c4c(c2)CCCC4CCC3)nc1 to produce O=C(O)c1cnc(Nc2cc3c4c(c2)CCCC4CCC3)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.